How To Fix SRT_CORE126 - Unsupported Media Type

SAP Error Message - Details

• Message type: E = Error

• Message class: SRT_CORE - Nachrichtenklasse für SOAP Runtime

• Message number: 126

• Message text: Unsupported Media Type

What causes this issue?

The target system is refusing to service the request because the entity
of the request
is in a format not supported by the requested resource for the requested
method.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Inform the people responsible for the consumer system about this
problem.
If the consumer system is an SAP system, please contact SAP Support.
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Click "Download as XML".
Confirm the pop-up for saving

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SRT_CORE126 - Unsupported Media Type ?

  The SAP error message SRT_CORE126 Unsupported Media Type typically occurs in the context of SAP's web services or when using the SAP Process Integration (PI) or Process Orchestration (PO) systems. This error indicates that the media type of the request being sent to the server is not supported or recognized by the server.
  Cause:
  
  
  Incorrect Content-Type Header: The most common cause of this error is that the Content-Type header in the HTTP request does not match any of the expected media types that the server can process. For example, if the server expects application/json but receives text/xml, this error may occur.
  
  
  Unsupported Format: The request body may be in a format that the server does not support. For instance, if the server is configured to accept only XML and the request is sent in JSON format, this error will be triggered.
  
  
  Configuration Issues: There may be configuration issues in the SAP system or the web service that prevent it from recognizing the media type.
  
  
  Version Mismatch: If there is a mismatch between the client and server versions or if the service has been updated to support new media types that the client does not recognize, this error can occur.
  
  
  Solution:
  
  
  Check Content-Type Header: Ensure that the Content-Type header in your HTTP request matches one of the media types that the server is configured to accept. Common media types include:
  
  application/xml
  application/json
  text/xml
  
  
  
  Review Service Documentation: Consult the documentation for the specific web service you are trying to access to confirm the expected media types and formats.
  
  
  Modify Request Format: If the request body is in an unsupported format, modify it to match the expected format. For example, if the server expects XML, ensure that the request body is valid XML.
  
  
  Check Configuration: Review the configuration settings in the SAP system to ensure that the web service is set up correctly to handle the expected media types.
  
  
  Test with Different Clients: If possible, test the web service with different clients or tools (like Postman or SOAP UI) to see if the issue persists. This can help isolate whether the problem is with the client or the server.
  
  
  Consult Logs: Check the SAP application logs (transaction SLG1) for more detailed error messages that may provide additional context about the issue.
  
  
  Update Client Libraries: If you are using a client library to interact with the SAP service, ensure that it is up to date and compatible with the server's expected media types.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific version of SAP you are using.
  Web Service Configuration: Review the configuration of the web service in the SAP system, including the service endpoint and the expected input/output formats.
  Community Forums: Consider searching or posting in SAP community forums or support channels for additional insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the SRT_CORE126 error in your SAP environment.