How To Fix /STMC/CR_LOG156 - --------------- HTTP Header Fields ---------------

SAP Error Message - Details

• Message type: E = Error

• Message class: /STMC/CR_LOG -

• Message number: 156

• Message text: --------------- HTTP Header Fields ---------------

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /STMC/CR_LOG156 - --------------- HTTP Header Fields --------------- ?

  The SAP error message /STMC/CR_LOG156 typically relates to issues with HTTP header fields during communication between SAP systems or between SAP and external systems. This error can occur in various contexts, such as when using SAP Cloud Platform, SAP Gateway, or when integrating with third-party services.
  Cause:
  The error message indicates that there is a problem with the HTTP header fields being sent or received. Common causes include:
  
  Malformed HTTP Headers: The headers may not conform to the expected format or may contain invalid characters.
  Missing Required Headers: Certain headers that are required for the request or response may be missing.
  Exceeding Header Size Limits: The total size of the HTTP headers may exceed the limits set by the server or client.
  Authentication Issues: If authentication headers (like tokens) are not correctly formatted or are missing, this can lead to errors.
  Proxy or Firewall Interference: Sometimes, network devices can modify or strip headers, leading to issues.
  
  Solution:
  To resolve the /STMC/CR_LOG156 error, consider the following steps:
  
  Check HTTP Headers: Review the HTTP headers being sent in the request. Ensure they are correctly formatted and include all required fields.
  Validate Header Size: Ensure that the total size of the headers does not exceed the limits set by the server or client.
  Authentication: If the request requires authentication, ensure that the authentication headers are correctly included and formatted.
  Network Configuration: Check if there are any proxies or firewalls that might be altering the HTTP headers. Adjust configurations as necessary.
  Debugging Tools: Use tools like Postman or Fiddler to inspect the HTTP requests and responses. This can help identify any discrepancies in the headers.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or updates that might address this specific error.
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific module or service you are working with to understand the expected HTTP headers.
  Community Forums: Engage with SAP community forums or support channels where similar issues may have been discussed.
  Logs and Traces: Enable detailed logging or tracing in your SAP system to capture more information about the error when it occurs.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed logs and the context in which the error occurs.