How To Fix SADT_REST103 - Expected request content-type: &2, but was: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: SADT_REST - Messages for ADT REST Framework

• Message number: 103

• Message text: Expected request content-type: &2, but was: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADT_REST103 - Expected request content-type: &2, but was: &1 ?

  The SAP error message SADT_REST103 indicates that there is a mismatch between the expected content type of a REST API request and the actual content type that was received. This error typically occurs when the server is expecting a specific content type (like application/json, application/xml, etc.) but receives a different one.
  Cause:
  
  Incorrect Content-Type Header: The client making the request is not setting the Content-Type header correctly. For example, if the server expects application/json but the client sends text/plain, this error will occur.
  Misconfigured API Client: The API client (like Postman, a custom application, etc.) may be misconfigured, leading to the wrong content type being sent.
  Server-Side Configuration: The server may have specific configurations that enforce strict content type checks, leading to this error if the content type does not match.
  
  Solution:
  
  Check the API Documentation: Review the API documentation to confirm the expected content type for the request. Ensure that your client is sending the correct content type.
  Set the Correct Content-Type Header: Modify the client code or configuration to set the Content-Type header to the expected value. For example, if the API expects application/json, ensure that the header is set as follows:
  Content-Type: application/json
  
  Test with Tools: Use tools like Postman or curl to manually test the API with the correct content type to ensure that the server responds as expected.
  Debugging: If you are developing an application, add logging to capture the headers being sent in the request. This can help identify if the content type is being set correctly.
  Server Configuration: If you have access to the server configuration, ensure that it is set up to accept the content types you intend to use.
  
  Related Information:
  
  HTTP Content-Type Header: This header is used to indicate the media type of the resource being sent. Common types include:
  
  application/json for JSON data
  application/xml for XML data
  application/x-www-form-urlencoded for form submissions
  multipart/form-data for file uploads
  
  
  REST API Best Practices: Always ensure that your API clients are configured to match the expected request formats and content types as defined in the API specifications.
  Error Handling: Implement error handling in your API client to gracefully manage and log errors like SADT_REST103, which can help in troubleshooting.
  
  By following these steps, you should be able to resolve the SADT_REST103 error and ensure that your API requests are correctly formatted.