How To Fix /PF1/MSG_CONV640 - Field Content of field '21' not equal to field '20' in copied message

SAP Error Message - Details

• Message type: E = Error

• Message class: /PF1/MSG_CONV -

• Message number: 640

• Message text: Field Content of field '21' not equal to field '20' in copied message

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /PF1/MSG_CONV640 - Field Content of field '21' not equal to field '20' in copied message ?

  The SAP error message /PF1/MSG_CONV640 indicates that there is a mismatch between the content of two fields in a copied message. Specifically, it states that the content of field '21' does not match the content of field '20'. This error typically arises in the context of message processing, such as when dealing with message types, message classes, or when copying messages in the SAP system.
  Cause:
  
  Field Mismatch: The primary cause of this error is that the values in the specified fields (field '20' and field '21') are expected to be the same, but they are not. This could be due to incorrect data entry, a programming error, or a configuration issue.
  Data Integrity Issues: If the data being copied or processed has integrity issues, such as missing or incorrect values, this error can occur.
  Custom Development: If there are custom developments or enhancements in the message processing logic, they might not be handling the data correctly, leading to this mismatch.
  
  Solution:
  
  Check Field Values: Review the values in fields '20' and '21' to understand why they are not matching. You can do this by debugging the program or transaction that is generating the error.
  Correct Data Entry: If the mismatch is due to incorrect data entry, correct the values in the relevant fields to ensure they match.
  Review Custom Code: If there is custom code involved, review it to ensure that it correctly handles the data being processed. Look for any logic that might be incorrectly setting the values of these fields.
  Configuration Settings: Check the configuration settings related to the message processing to ensure that they are set up correctly and that there are no discrepancies.
  Consult Documentation: Refer to SAP documentation or notes related to the specific message type or process you are working with for any known issues or additional guidance.
  
  Related Information:
  
  Transaction Codes: Depending on the context, you may want to check transaction codes related to message processing, such as SMSG (for message management) or SE80 (for development).
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that might address this specific error or provide additional troubleshooting steps.
  Debugging: Use the ABAP debugger to step through the code where the error occurs to gain insights into the values being processed and identify the root cause of the mismatch.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.