How To Fix SXCO126 - Length must be equal to &1.

SAP Error Message - Details

• Message type: E = Error

• Message class: SXCO - Extension Common: Messages

• Message number: 126

• Message text: Length must be equal to &1.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SXCO126 - Length must be equal to &1. ?

  The SAP error message SXCO126, which states "Length must be equal to &1," typically occurs in the context of SAP's cross-system communication, particularly when dealing with RFC (Remote Function Call) or IDoc processing. This error indicates that there is a mismatch in the expected length of a data field.
  Cause:
  
  
  Data Length Mismatch: The error usually arises when the length of a data field being sent or received does not match the expected length defined in the data structure. This can happen if:
  
  The data being sent is longer than the defined length.
  The data being sent is shorter than the defined length.
  There is a mismatch between the sender and receiver data structures.
  
  
  
  Configuration Issues: Incorrect configuration in the RFC destination or IDoc settings can also lead to this error.
  
  
  Version Mismatch: If there are different versions of the data structures between the systems involved in the communication, it can lead to length discrepancies.
  
  
  Solution:
  
  
  Check Data Structures: Verify the data structures (like IDoc types or RFC function module parameters) on both the sending and receiving systems. Ensure that the lengths of the fields match.
  
  
  Adjust Data Length: If you have control over the data being sent, ensure that the data conforms to the expected length. You may need to truncate or pad the data accordingly.
  
  
  Review Configuration: Check the configuration of the RFC destination or IDoc settings to ensure they are correctly set up. This includes checking the mapping of fields if you are using middleware.
  
  
  Debugging: Use transaction codes like WE02 or WE05 for IDocs or SE37 for RFC function modules to analyze the data being processed. This can help identify where the length mismatch is occurring.
  
  
  Consult Documentation: Review SAP documentation or notes related to the specific IDoc type or RFC function module you are working with. There may be specific guidelines or known issues that can help resolve the error.
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that might address this specific error message or provide additional troubleshooting steps.
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  WE02 / WE05: For monitoring IDocs.
  SE37: For checking RFC function modules.
  SE80: For checking the data dictionary and structures.
  
  
  
  SAP Community: Engaging with the SAP Community forums can provide insights from other users who may have encountered similar issues.
  
  
  SAP Support: If the issue persists and you have a support contract, consider reaching out to SAP Support for assistance.
  
  
  By following these steps, you should be able to identify and resolve the cause of the SXCO126 error in your SAP environment.