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

KAO001 - Overview

• 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