How To Fix B1044 - Incorrect function module & called up

SAP Error Message - Details

• Message type: E = Error

• Message class: B1 - ALE group messages

• Message number: 044

• Message text: Incorrect function module & called up

What causes this issue?

The function module &v1&, which was called for the application input,
was not able to process the IDoc. A possible cause is that the IDoc has
wrong message type or IDoc type.

How to fix this error?

Please check the message type assignment for the application function
module in the ALE customizing.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message B1044 - Incorrect function module & called up ?

  The SAP error message B1044, which states "Incorrect function module & called up," typically indicates that there is an issue with the function module being called in your ABAP program or within a specific transaction. This error can arise due to various reasons, including:
  Causes:
  
  Incorrect Function Module Name: The function module name specified in the code may be misspelled or does not exist in the system.
  Function Module Not Active: The function module may not be activated or may have been deleted.
  Authorization Issues: The user may not have the necessary authorizations to execute the function module.
  Parameter Mismatch: The parameters being passed to the function module may not match the expected parameters in terms of type or number.
  Transport Issues: If the function module was recently transported from another system, it may not have been properly imported or activated.
  
  Solutions:
  
  Check Function Module Name: Verify that the function module name is correct and exists in the system. You can do this by using transaction SE37 (Function Builder) to search for the function module.
  Activate the Function Module: If the function module is inactive, activate it in transaction SE37.
  Review Authorizations: Ensure that the user executing the function module has the necessary authorizations. You can check this using transaction SU53 to analyze authorization failures.
  Check Parameters: Review the parameters being passed to the function module. Ensure that they match the expected input and output parameters defined in the function module.
  Transport Check: If the function module was recently transported, check the transport logs to ensure it was successfully imported and activated in the target system.
  Debugging: If the issue persists, consider debugging the program to trace where the error occurs and gather more context about the parameters being passed.
  
  Related Information:
  
  Transaction Codes: 
  
  SE37: Function Builder
  SE80: Object Navigator
  SE11: Data Dictionary
  SU53: Authorization Check
  
  
  Documentation: Review SAP documentation or notes related to the specific function module for any known issues or additional requirements.
  SAP Community: Consider searching or posting in the SAP Community forums for insights from other users who may have encountered similar issues.
  
  If the problem continues after trying the above solutions, it may be beneficial to consult with your SAP Basis or ABAP development team for further investigation.