How To Fix KAO001 - Incorrect callup of function module &1

SAP Error Message - Details

• Message type: E = Error

• Message class: KAO - General Notifications for Period-End Closing in Projects

• Message number: 001

• Message text: Incorrect callup of function module &1

What causes this issue?

The function module &V1& was called up incorrectly.

System Response

The system recognized the wrong call. Processing in the specified
function module was terminated.

How to fix this error?

This error should not occur. Create a problem message under the
component PS-REV-RA and use the message number KAO 001.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message KAO001 - Incorrect callup of function module &1 ?

  The SAP error message KAO001 ("Incorrect callup of function module &1") typically occurs when there is an issue with the way a function module is being called in the SAP system. This error can arise from various reasons, including incorrect parameters, missing data, or issues with the function module itself.
  Causes:
  
  Incorrect Parameters: The function module may be called with incorrect or missing parameters. Each function module has specific input and output parameters that must be adhered to.
  Authorization Issues: The user may not have the necessary authorizations to execute the function module.
  Configuration Issues: There may be configuration problems in the system that affect how the function module operates.
  Custom Code: If the function module is being called from custom ABAP code, there may be errors in the code logic or syntax.
  Transport Issues: If the function module was recently transported from another system, there may be inconsistencies or missing dependencies.
  
  Solutions:
  
  Check Function Module Documentation: Review the documentation for the function module to ensure that it is being called with the correct parameters and in the correct context.
  Debugging: Use the ABAP debugger to step through the code where the function module is called. This can help identify the exact point of failure and the values of the parameters being passed.
  Authorization Check: Ensure that the user executing the function module has the necessary authorizations. You can check this in transaction SU53 after the error occurs.
  Review Custom Code: If the function module is being called from custom ABAP code, review the code for any logical errors or incorrect syntax.
  Check for Transport Issues: If the function module was recently transported, check for any missing dependencies or configuration settings that may not have been transported correctly.
  Consult SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address known issues with the function module in question.
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE37 (Function Builder) to view the function module and its parameters, or SE80 (Object Navigator) to check related objects.
  SAP Community: The SAP Community forums can be a valuable resource for finding similar issues and solutions shared by other users.
  SAP Support: If the issue persists and cannot be resolved, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to diagnose and resolve the KAO001 error in your SAP system.