Problem description
The value of the x-oss-credential field in a PostObject request is invalid.
Causes
You initiated a PostObject request that uses the V4 signature, but the value of the x-oss-credential field is invalid.
Examples
The value of x-oss-credential field in the request does not end with aliyun_v4_request.
Solutions
The x-oss-credential field is in the following format: <YOUR-AKID>/YYYYMMDD/REGION/SERVICE/aliyun_v4_request. Make sure that the field is correctly specified.
For more information, see PostObject.