How To Fix MN867 - Internal error during field check (invalid message)

SAP Error Message - Details

• Message type: E = Error

• Message class: MN - Message class for subsequent settlement (Purchasing)

• Message number: 867

• Message text: Internal error during field check (invalid message)

What causes this issue?

Certain function modules are executed in order to check external data
records (checking of field contents or enhancement of data).
In the process, a message has been issued without one of the valid
exceptions being used.
The error occurred in function module &V2&.

System Response

The external data record cannot be adopted.

How to fix this error?

Please look into this matter.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MN867 - Internal error during field check (invalid message) ?

  The SAP error message MN867, which states "Internal error during field check (invalid message)," typically indicates that there is an issue with the data being processed in the system, particularly during a field validation check. This error can occur in various contexts, such as during the posting of documents, data entry, or when executing certain transactions.
  Causes:
  
  Data Integrity Issues: The data being entered or processed may not meet the required format or constraints defined in the system.
  Custom Code or Enhancements: If there are custom developments or enhancements in the system, they may not be handling certain data correctly, leading to this error.
  Configuration Errors: Incorrect configuration settings in the relevant modules (e.g., MM, SD, FI) can lead to validation failures.
  System Bugs: There may be bugs in the SAP system or specific patches that need to be applied.
  
  Solutions:
  
  Check Input Data: Review the data being entered for any inconsistencies or invalid formats. Ensure that all mandatory fields are filled out correctly.
  Review Custom Code: If there are any custom programs or enhancements, review the code to ensure it is correctly handling the data and not causing the error.
  Transaction Logs: Check transaction logs or debugging information to identify the specific field or data causing the issue.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. Applying the recommended patches or updates can resolve known issues.
  Configuration Review: Verify the configuration settings in the relevant modules to ensure they are set up correctly.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP Support for further assistance.
  
  Related Information:
  
  Transaction Codes: Depending on where the error occurs, you may be using transaction codes like ME21N (Create Purchase Order), FB01 (Post Document), etc.
  Debugging: If you have access to debugging tools, you can set breakpoints to analyze the program flow and identify where the error is triggered.
  User Authorizations: Ensure that the user has the necessary authorizations to perform the action that is causing the error.
  
  By following these steps, you should be able to identify the root cause of the MN867 error and implement a solution.