If an error occurs when you call an IoT Platform API, you can use the error code to locate and resolve the issue.
Common error codes
| Error code | Error message | Description | Possible solution |
| 200 | success | The request was successful. | Not applicable. |
| 400 | request error | Request error. | Use the error message and logs to identify and fix the problem, or contact technical support. |
| 401 | request auth error | Request authentication error. |
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| 403 | request forbidden | The request is forbidden. |
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| 404 | service not found | Service not found. |
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| 429 | too many requests | Too many requests. | You are making too many requests. Reduce the call frequency or try again later. |
| 460 | request parameter error | Request parameter error. | The business parameters are invalid. Check whether the business parameters that you uploaded are correct. |
| batch device amount invalid | Number of unauthorized mass-produced devices. | Verify the number of mass-produced devices. | |
| invalid count or offset | Invalid count or offset. `count` must be greater than 0, and `offset` must be greater than or equal to 0. | Check whether the values of the `count` (the number of entries to return on each page for a paged query) and `offset` (the query offset) parameters are correct. | |
| 500 | service error | Server-side error. | An unknown server-side exception occurred. Contact the service team to resolve the issue. |
| 503 | service not available | Service not available. | An unknown server-side exception occurred. Contact the service team to resolve the issue. |
| 2000 | param is invalid | Request parameter error. |
|
| 2062 | identityId does not exist | The identityId does not exist. |
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| 2063 | iotId not exist | The device does not exist. | Check whether the provided iotId is correct. |
| 2065 | identityId and iotId not bound | The device and account are not bound. | Verify that the current account is bound to the device. |
| 2066 | identityId is not manager | This user is not an administrator of the device. | Check the sharing relationship between the user and the device. |
| 2073 | this product not support share | The sharing mode of the device does not support QR code generation. For example, devices in preemptive mode cannot be shared. | Before you call the API, check the sharing mode of the device. |
| 2074 | query msg-center hsf error | An error occurred when IoT Platform called the Message Center. | An unknown server-side exception occurred. Contact the service team. |
| 2075 | share model not config for this product | The sharing mode is not configured. | The sharing mode is not configured for the product. Go to the product development center to configure a sharing mode. |
| 2077 | can't get identityId by email and mobile | The user's identityId cannot be found based on the phone number or email address. | The user does not exist. Enter the information again. |
| 2078 | not the same initiator when cancel share dev or scene | Different initiator. | Before you call the API, check whether you initiated the share. You cannot cancel a share that was initiated by another user. |
| 2082 | receiver has reject share | The recipient has rejected the share. | This share has already been processed. You cannot cancel a share that has been processed. |
| 2085 | receiver has agree share | The recipient has accepted the share. | This share has already been processed. You cannot cancel a share that has been processed. |
| 2086 | can not share to oneself | You cannot share with yourself. | Check whether you have set yourself as the recipient of the share. |
| 2087 | iotId has bind to target user | The device is already bound to the target user. | This is a duplicate operation. Before you proceed, check whether the device is already bound to the user. |
| 2088 | forbidden to repeat launch share | Repeated sharing is not allowed. | Check whether a share is already configured. |
| 2093 | forbidden to repeat cancel sharing | Repeated cancellation is not allowed. | This is a duplicate operation. Before you proceed, check the status of the share. |
| 2096 | sharing time expired | The share has expired. | Share the resource again. |
| 2097 | sharing record not exist | The share does not exist. | Check whether the share exists. |
| 20050 | xxx required | A required parameter is missing. | Check whether all required fields for the API are specified. |
| 28538 | event id is invalid or not exist | Invalid event alerting ID. | Check whether the provided eventId is correct. |
| 5005 | product not found | The product was not found. | Check whether the ProductKey is correct. |
| 5225 | query product failed | Failed to query the product. | Check whether the provided ProductKey is correct. |
| 600 | SYSTEM_ERROR | System error. | Retry the operation and switch the network provisioning method. |
| 603 | UNKNOWN_ERROR | Unknown error. | Contact technical support for a solution. |
| 604 | SDK_ERROR | Internal SDK error. | Retry the operation and switch the network provisioning method. |
| 605 | USER_CANCEL | The user canceled network provisioning. | Check whether the network provisioning request exists. |
| 606 | SERVER_FAIL | Server-side request failed. | Check the logs to determine the error type. |
| 607 | PROVISION_TIMEOUT | Network provisioning timed out. | Try again later. |
| 60101 | NETWORK_ERROR | The connected Wi-Fi is a 5 GHz network, which is not supported for network provisioning. | Prompt the user to switch to a 2.4 GHz network. |
| 60102 | NETWORK_ERROR | Wi-Fi is not connected. | Prompt the user to turn on Wi-Fi. |
| 60103 | NETWORK_ERROR | Cellular data is not enabled or there is no SIM card. | Prompt the user that the current network provisioning method requires a SIM card and an active Internet connection. |
| 60201 | PARAMS_ERROR | The ProductKey is empty. | Check whether the `linkType` parameter is empty or unsupported, or whether required parameters are missing. |
| 60202 | PARAMS_ERROR | Incorrect linkType. | Check whether the `linkType` parameter is empty or unsupported, or whether required parameters are missing. |
| 60203 | PARAMS_ERROR | Incorrect deviceType. | Check whether the `deviceType` parameter is correct, or whether the device is not a Wi-Fi device. |
| 60204 | PARAMS_ERROR | Network provisioning parameter error. | Check the network provisioning parameters. For example, check whether the provisioning version numbers match. |
| 60205 | PARAMS_ERROR | The SSID is empty. | Provide the correct SSID. |
| 6100 | device not found | The device does not exist. | Check whether the provided iotId is correct. |
| 6289 | device is already active | The provided device information already exists in the cloud. | Check whether the device information is being submitted repeatedly. |
| 6608 | token not found | The token reported by the device does not exist. | The token is a required field. Check whether it has been provided. |
| 9103 | update data failed | Upgrade failed. | Query the logs that are reported by the device to locate the error. |
| 9112 | there is no device exist | The device does not exist. | Check whether the provided iotId is correct. |
| 9119 | firmware not exist | The firmware does not exist. | Check whether the provided version number is correct. |
| 9131 | invalid device | Invalid device. | Verify that the device status is correct. |
| 9132 | non-existent job record | The upgrade job record does not exist. | Verify that a firmware upgrade has been performed on the device. |
| 9143 | upgrade info posted is invalid | An error occurred while the device was reporting the upgrade progress. | Verify that the API parameters are correct, or contact technical support for a solution. |
| 9144 | device count exceeded | The device count limit is exceeded. | For more information about device quantity limits, see the API documentation. |
| 9146 | upgrade record not exist | The upgrade record does not exist. | Verify that the device has completed the firmware upgrade for this version. |
| 9153 | device auth failed | Device verification failed. | Verify that the device status is correct. |
| 10196 | device exist circle | The device has a circular dependency. A specific property of a specific product cannot repeatedly appear in the Things Communication Alliance (TCA) model. | Use the error message and logs to identify and fix the problem, or contact technical support. |
| 10197 | scene exist circle | The scene has a circular dependency. The scenes that are specified in the action cannot form a closed loop. | Check the scene logic for circular dependencies again. |
| 10198 | scene depth illegal | The nesting depth of the scene is invalid. | A scene can have a maximum nesting depth of one judgement node under a logic node. Check for incorrect nesting of logic nodes. |
| 10199 | scene width illegal | The number of scenes in the action is invalid. | Check whether the number of scenes in the action exceeds the limit of 100. |
| 10200 | scene empty | This scene does not exist. | Verify that the scene exists. After you create a scene, check whether it was created successfully. |
| 20004 | gateway.backend service error | Check the current request for incorrect input parameters. | Check the current request for incorrect input parameters. For example, a JSON parameter was passed as the JSONString type. |
| 20017 | Invalid cloudToken or timeout | The CloudToken is invalid or the request timed out. | Use the cloud resource API to obtain a new token, and refresh the token before it expires. |
| 24063 | query device failed | Failed to query device information. | Check whether the provided device ID is incorrect or invalid. |
| 28008 | product not exist | The product does not exist. | Check whether the product exists. |
| 28036 | no activation code quota | Insufficient activation code quota. | Purchase activation codes. |
| 28038 | product not release | The product is not published. | Publish the product. |
| 28044 | no valid device name | No valid device name. | Check whether the device certificate is correct. |
| 28045 | device name checking | The device name is being checked. | Check whether the device certificate is correct or try again later. |
| 28046 | batch has created | The batch has already been created. | Check whether the batch already exists. |
| 28081 | aliyun account not register phone number | The Alibaba Cloud account is not associated with a phone number. | Associate a phone number with the Alibaba Cloud account. |
| 28082 | sms send fail | Failed to send the message. | Associate a phone number with the Alibaba Cloud account. |
| 28083 | The format of the product name is incorrect | The product name format is incorrect. | Change the product name to meet the format requirements. |
| 28501 | project is not exist | The project does not exist. | Before you perform the operation, check whether the project exists. |
| 28502 | alarm record is not exist | The alert record does not exist. | Before you perform the operation, check whether the alert record exists. |
| 28504 | device is offline | The device is offline. | Before you perform the operation, check whether the device is online. |
| 28505 | product not exist | The product does not exist. | Before you perform the operation, check whether the product exists. |
| 28517 | invalid iot id | Invalid iotId. | Verify that the provided iotId exists. |
| 28532 | invalid user info | Invalid user identity information. | Verify that the provided user identity ID exists. |
| 28527 | user not bind with lock | The key is not yet bound to a virtual user. | Check whether a user for this lock has been created in the cloud. |
| 28528 | operation type not support | The specified virtual user information update operation type is not supported. | The specified operation type is incorrect. Check whether the relevant enumeration in the code is correct.
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| 28529 | virtual user attr list is empty | The attribute list of the virtual user is empty. | The specified user attributes and attribute values are empty. Check the specified parameter values. |
| 28530 | lock user has been bound to other virtual user | The key is already bound to another virtual user. | Create a new key for the new user. |
| 28551 | user no register or router | The user is not bound to a provisioned device or router. | Verify that the user is bound successfully. |
| 28560 | device not exist | The device does not exist. | Check the provided iotId. |
| 28563 | ble device bind sign error | Bluetooth device signature verification failed. |
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| 28566 | product not exist | The product does not exist. | Check whether a valid ProductKey was provided. |
| 28567 | device must be gprs device | The device must be a GPRS device. | Before you perform the operation, check the device network type. |
| 28571 | device types that are not supported | Unsupported device type. | Check whether the device type is correct. |
| 28573 | No permission to bind the device | The current app cannot add this device. Contact after-sales support. | Check whether the product that corresponds to this device is an associated product of the app. |
| 28601 | user device not bind | No user device is attached. | Before you perform the operation, confirm the binding relationship between the user and the device. |
| 28603 | Remove all devices in this group before deleting it | Delete the devices in the group before you delete the group. | Before you delete a group, confirm that it contains no devices. |
| 28604 | The group does not exist | The group does not exist. | Before you perform the operation, confirm that the group exists. |
| 28605 | "You are not authorized to delete \"all devices\" or the devices in this group. | You cannot delete the "all devices" group or the devices in it. | Confirm whether the device belongs to the "all devices" group. |
| 29003 | identityId is null | The identityId is empty. | Check whether the user is logged on to another app. |
| 29004 | device is unbind | The device is unbound. | Confirm that the device is unbound. |
Network provisioning error codes
| Error code | Error description | Message displayed on the public app | Possible solution |
| 6221 | The device is offline. | Failed to add the device. Check the device status. | Connect the device to the Internet and check its online status. |
| 61701 | Network provisioning timed out. The target device hot spot was not found. | Device hot spot not found. Follow the guide to initialize the device. | For device hot spot provisioning, check whether the device has entered provisioning mode. |
| 61702 | Network provisioning timed out. The target Bluetooth Wi-Fi dual-mode device was not found. | Device Bluetooth signal not found. Follow the guide to initialize the device. | For Bluetooth-assisted provisioning, check whether the device has entered provisioning mode. |
| 61703 | Network provisioning timed out. The Bluetooth device connection timed out. | The device failed to be added because the Bluetooth connection timed out. Try again. | Retry the operation or switch the network provisioning method. |
| 61704 | Network provisioning timed out. The request to obtain dual-mode device information timed out. | The device failed to be added because the request to obtain Bluetooth information timed out. Try again. | Retry the operation or switch the network provisioning method. |
| 61705 | Network provisioning timed out. No target device is connected to the mobile hot spot. | No device was found connected to the mobile hot spot. Follow the guide to initialize the device. | For mobile hot spot mode, check whether the device has entered provisioning mode. |
| 101600 | System error. | Failed to add the device. Retry or switch the network provisioning method. | Retry the operation or switch the network provisioning method. |
| 101602 | Parameter error. | None | Troubleshoot based on the message prompt. |
| 101603 | Unknown error. | Failed to add the device. Retry or switch the network provisioning method. | Retry the operation or switch the network provisioning method. |
| 101603+60301 | SDK API request failed. | Failed to add the device. Retry or switch the network provisioning method. | Troubleshoot based on the message prompt or switch the network provisioning method. |
| 101604 | Internal error or other errors. | Failed to add the device. Retry or switch the network provisioning method. | Retry the operation or switch the network provisioning method. |
| 101609 | The request to obtain the local binding token timed out. | Failed to add the device. Retry or switch the network provisioning method. | Retry the operation or switch the network provisioning method. |
| 101601+60101 | The connected Wi-Fi is a 5 GHz network, which is not supported for network provisioning. | The current network is not supported. Switch to a 2.4 GHz network. | Prompt the user to switch to a 2.4 GHz network. |
| 101601+60102 | Wi-Fi is not connected or was disconnected during the process. | The device failed to be added because the request to obtain Bluetooth information timed out. Try again. | Prompt the user to turn on Wi-Fi or check the Wi-Fi connection. |
| 101601+60104 | The AP hot spot was not enabled during mobile hot spot provisioning. | The mobile Wi-Fi connection is unstable. Make sure your phone is connected to Wi-Fi and try again. | Prompt the user to manually enable the pre-configured hot spot on the phone and then restart network provisioning. |
| 101616+61601 | Network provisioning failed. The Bluetooth connection was abnormal or failed. | The device failed to connect to the router due to poor home network conditions. Try again. | Retry the operation or switch the network provisioning method. |
| 101616+61602 | Network provisioning failed. The Bluetooth connection failed. | The device failed to connect to the router due to poor home network conditions. Try again. | Retry the operation or switch the network provisioning method. |
| 101616+61605 | Network provisioning failed. The request to obtain Bluetooth Wi-Fi dual-mode device information failed. | Failed to obtain device Bluetooth information. Try again. | Retry the operation or switch the network provisioning method. |
| 101616+61609 | Combo device network provisioning failed. | The device failed to be added due to poor mobile network conditions. Try again. | Retry the operation or switch the network provisioning method. |
| 101617+61701 | The hot spot enabled by the device to be provisioned was not found. | The device failed to be added due to poor mobile network conditions. Try again. | Check whether you selected the wrong provisioning entry point, or whether the device has entered provisioning mode. |
| 101617+61702 | No combo device was found. | The device failed to be added due to poor mobile network conditions. Try again. | Check whether you selected the wrong provisioning entry point, or whether the device has entered provisioning mode. |
| 101617+61703 | Combo device Bluetooth connection failed. | The device failed to be added due to poor mobile network conditions. Try again. | Restart the Bluetooth switch and then retry the operation. |
| 101617+61706 | Device hot spot connection failed. | The device failed to be added due to poor mobile network conditions. Try again. |
|
| 101617+61709 | Network provisioning failed. If the mobile network is normal, the device provisioning failed. If the mobile network is abnormal, the network issue caused the failure. | The device failed to be added due to poor mobile network conditions. Try again. | Retry the network provisioning operation. |
| 101617+61708 | Network provisioning failed. The device hot spot connected successfully, but both the mobile network and Wi-Fi are disconnected. | The device failed to be added due to poor mobile network conditions. Try again. | Retry the network provisioning operation. |
| 101618 | An error message is returned from the device, which usually indicates a failure to connect to the cloud. For more information, see the device-side error codes at the bottom of this document. | The device failed to be added due to poor mobile network conditions. Try again. | Retry the network provisioning operation. |
| 999103 | A connection exception or timeout occurred when the device accessed the cloud API. | The device failed to be added due to poor mobile network conditions. Try again. | Check the mobile network connection. |
Home space error codes
| Error code | Error message | Description | Possible solution |
| 28804 | Duplicate name. | Duplicate home space name. | Change the name of the home space. |
| 28805 | Invalid name. | The home space name is invalid. It can contain only letters, numbers, spaces, and Chinese characters. | Change the name of the home space to meet the requirements. |
| 28806 | This feature is not supported by the current app version. Please upgrade to the latest version. | This feature is not supported by the current app version. Upgrade to the latest version. | Upgrade the app to the latest version. |
| 28807 | Up to 100 devices can be added. | You can add a maximum of 100 devices. | Confirm the number of devices that have been added. |
| 28808 | The maximum number of room that you can create is exceeded. | You can create a maximum of 20 rooms. | Confirm the number of rooms that have been created. |
| 28809 | The maximum number of home that you can create is exceeded. | You can create a maximum of 10 homes. | Confirm the number of homes that have been created. |
| 28810 | Under the low limit of the number of home. | You cannot delete the home. You must keep at least one home. | Verify that there is only one home. |
| 28811 | One device only can be added to one group. | A device can be added to only one device group. | Confirm whether a device group exists. |
| 28812 | Only letters，numbers and Chinese characters are supported. Must be less than 20 characters. | Only letters, numbers, spaces, and Chinese characters are supported. The maximum length is 20 characters. | Modify the parameters as required. |
| 28813 | Only letters，numbers and Chinese characters are supported. Must be less than 40 characters. | Only letters, numbers, spaces, and Chinese characters are supported. The maximum length is 40 characters. | Modify the parameters as required. |
| 28820 | Add at least 2 devices. | Add at least 2 devices. | Confirm the current number of devices. |
| 28821 | Up to 20 groups can be added. | You can add a maximum of 20 device groups. | Confirm the current number of device groups. |
| 28823 | Up to 100 devices can be added. | You can add a maximum of 100 devices. | Confirm the current number of devices. |
Common return codes
| Result code | Description |
| 0 | The operation was successful. |
| 100001 | The AccessToken has expired. |
| 100002 | Failed to exchange the code for an AccessToken. |
| 100003 | The RefreshToken has expired or is invalid. |
| 100004 | The AccessToken is invalid because the user changed their password or revoked authorization. |
| 100005 | The AccessToken is invalid. |
| 100006 | Invalid OpenId. |
| 110000 | A general system error occurred. If other errors cannot be listed, contact the third-party vendor. |
Device-side error codes
| Error code | Device status | Error code description | Message displayed on the app | Solution |
| 50176 (0xC400) | Provisioning preparation phase | Wi-Fi driver failed. | Failed to add the device. Try again. | Restart the device and try again, or return it to the factory for inspection. |
| 50208 (0xC420) | Failed to start network provisioning. | Failed to add the device. Try again. | Restart the device and try again, or return it to the factory for inspection. | |
| 50240 (0xC440) | One-click provisioning | The request to obtain the SSID and password of the access point (AP) timed out. | The device timed out connecting to Wi-Fi. Try again. | Restart the Wi-Fi switch and then retry the operation. |
| 50241 (0xC441) | The provisioning protocol version sent from the peer does not match. | The device is not working correctly. Contact after-sales support or submit feedback. | Check the provisioning protocol version numbers on the mobile client and the device. | |
| 50242 (0xC442) | Provisioning message verification error. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device firmware and device certificate are correct. | |
| 50243 (0xC443) | An error occurred while decoding the SSID and password of the AP. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device firmware and device certificate are correct. | |
| 50272 (0xC460) | Device hot spot provisioning | Failed to enable the device hot spot. | Failed to add the device. Try again. | Restart the device and try again, or return it to the factory for inspection. |
| 50273 (0xC461) | Timed out waiting for the app to connect after the device hot spot was enabled. | The device timed out waiting for the phone to connect. Try again. | Confirm the behavior of the peer and retry the operation. | |
| 50274 (0xC462) | The device did not receive the SSID and password after the app connected to the device hot spot. | The device timed out connecting to Wi-Fi. Try again. | Restart the device and try again, or return it to the factory for inspection. | |
| 50275 (0xC463) | During device hot spot provisioning, the provisioning protocol version sent from the peer does not match. | The device is not working correctly. Contact after-sales support or submit feedback. | Check the version numbers on the mobile client and the device, or confirm that the provisioning package data sent from the app is correct. | |
| 50276 (0xC464) | Provisioning message verification error. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device firmware and device certificate are correct, or return the device to the factory for inspection. | |
| 50277 (0xC465) | An error occurred while decoding the SSID and password of the AP. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device firmware and device certificate are correct. | |
| 50278 (0xC466) | Failed to switch the device hot spot to station mode. | Failed to switch the device hot spot. Try again. | Restart the device and try again, or return it to the factory for inspection. | |
| 50304 (0xC480) | Zero-touch provisioning | The wait for zero-configuration provisioning timed out. The device did not receive the SSID and password. | The device timed out connecting to Wi-Fi. Try again. | Retry the network provisioning operation. |
| 50305 (0xC481) | The provisioning protocol version sent from the peer does not match. | The device is not working correctly. Contact after-sales support or submit feedback. | Check whether the version numbers on the mobile client and the device are confirmed. | |
| 50306 (0xC482) | Provisioning message verification error. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device firmware and device certificate are correct. | |
| 50307 (0xC483) | An error occurred while decoding the SSID and password of the AP. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device firmware and device certificate are correct. | |
| 50336 (0xC4A0) | Bluetooth-assisted provisioning | Failed to enable BLE broadcasting. | Device Bluetooth initialization failed. Try again. | Restart the device and try again, or return it to the factory for inspection. |
| 50337 (0xC4A1) | Failed to establish a BLE connection. | Device Bluetooth connection failed. Try again. | Verify that the Bluetooth signal and device certificate are correct. | |
| 50338 (0xC4A2) | The device did not receive the SSID and password after a BLE connection was established. | The device timed out connecting to Wi-Fi. Try again. | Retry the network provisioning operation. | |
| 50339 (0xC4A3) | During Bluetooth-assisted provisioning, the provisioning protocol version sent from the peer does not match. | The device is not working correctly. Contact after-sales support or submit feedback. | Check whether the version numbers on the mobile client and the device are confirmed. | |
| 50340 (0xC4A4) | Provisioning message verification error. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device firmware and device certificate are correct. | |
| 50341 (0xC4A5) | An error occurred while decoding the SSID and password of the AP. | The device is not working correctly. Contact after-sales support or submit feedback. | An error occurred while parsing the provisioning message. Verify that the device firmware and device certificate are correct. | |
| 50342 (0xC4A6) | Failed to disconnect the BLE connection. | Bluetooth disconnection failed. Try again. | Bluetooth disconnection failed. Disconnect the Bluetooth connection from the phone or restart the device. | |
| 50343 (0xC4A7) | Failed to disable BLE broadcasting. | Bluetooth failed to turn off. Try again. | Restart the device and try again, or return it to the factory for inspection. | |
| 50400 (0xC4E0) | Router connection status | The router cannot be found. | No available Wi-Fi network was found. Check the following items and try again:
| Confirm the router signal, that the SSID was entered correctly, and that the router is operating on the 2.4 GHz frequency band. |
| 50401 (0xC4E1) | Connection failed because the router signal is too weak (RSSI information attached). | The device failed to connect to Wi-Fi. Check the following items and try again:
| Confirm the router signal and the distance between the device and the router. | |
| 50402 (0xC4E2) | Router connection authentication failed. | The device failed to connect to Wi-Fi. Re-enter the correct Wi-Fi password. | Confirm that the SSID and password entered during the provisioning phase are correct. | |
| 50403 (0xC4E3) | Failed to obtain an IP address. | The device failed to connect to Wi-Fi. Check whether the router settings are normal. | Check whether the router is working correctly and confirm whether another station (STA) can join. | |
| 50404 (0xC4E4) | Failed to announce locally to the connected router. | The device is not working correctly. Try again. | Restart the device and retry the operation. | |
| 50432 (0xC500) | Cloud connection status | HTTPS initialization failed. | Device initialization failed. Try again. | Restart the device and try again, or return it to the factory for inspection. |
| 50433 (0xC501) | HTTPS domain name resolution failed (domain information attached). | Device domain name resolution failed. Check whether the current Wi-Fi network is normal. | Check whether the current router network is normal. | |
| 50434 (0xC502) | HTTPS pre-authentication failed (authentication timed out). | The device timed out connecting to Wi-Fi. Check whether the current Wi-Fi network is normal. | Check whether the current router network is normal, or check whether the pre-authentication data contains invalid fields. | |
| 50435 (0xC503) | HTTPS pre-authentication failed (device certificate error). | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device certificate is correct, or troubleshoot the issue based on the code returned from the cloud. | |
| 50436 (0xC504) | Failed to start MQTT. | Device initialization failed. Try again. | Restart the device and try again, or return it to the factory for inspection. | |
| 50437 (0xC505) | MQTT connection to the cloud timed out. | The device timed out connecting to Wi-Fi. Check whether the current Wi-Fi network is normal. | Check whether the current router network is normal. | |
| 50438 (0xC506) | MQTT authentication failed. | The device is not working correctly. Contact after-sales support or submit feedback. | Verify that the device certificate is correct, or troubleshoot the issue based on the specific error message. | |
| 50439 (0xC507) | Failed to start the device CoAP service. | Device initialization failed. Try again. | Restart the device and try again, or return it to the factory for inspection. | |
| 50440 (0xC508) | The request to report the device binding token to the cloud timed out. | The device timed out connecting to Wi-Fi. Check whether the current Wi-Fi network is normal. | Check whether the current router network is normal. | |
| 50441 (0xC509) | An error occurred in the response message that was returned from the cloud for the device binding token report. | The device is not working correctly. Contact after-sales support or submit feedback. | Troubleshoot the issue based on the error message in the cloud response. | |
| 50442 (0xC50A) | The token query request message that was received from another device on the same local area network is invalid. | The device is not working correctly. Contact after-sales support or submit feedback. | Query the cloud request message to determine the specific reason. | |
| 50443 (0xC50B) | Failed to reply to a token query from another device on the same local area network. | The device is not working correctly. Contact after-sales support or submit feedback. | The API call failed. Restart the device and retry the operation. |
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