0002-00000712-Object Storage Service(OSS)-阿里云帮助中心

Problem description

The X-Amz-Algorithm form field in the PostObject request is missing.

Causes

The X-Amz-Algorithm form field in the PostObject request is used to identify the signature algorithm. If you initiate a PostObject request that uses the Amazon S3-compatible V4 signature, the x-amz-signature form field is required.

Examples

You initiated a PostObject request that uses the Amazon S3-compatible V4 signature, but the X-Amz-Algorithm form field is missing.

Solutions

Make sure that the X-Amz-Algorithm form field is included in the PostObject request and that a valid value is specified for the X-Amz-Algorithm form field. If the PostObject request uses the Amazon S3-compatible V4 signature, the x-amz-signature form field must be set to AWS4-HMAC-SHA256.

For more information, see PostObject.