How To Fix AQ022 - Incorrect interface for assigned function module

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 022

• Message text: Incorrect interface for assigned function module

What causes this issue?

The interface of the function module that has been attached does not
conform to specifications.
With interface type 0 the interface must look as follows:
Import:
Import parameter: Reference field: Reference type:
PROGRAM SY-REPID
LIST_ID RSAQLDESC-LID
LISTTEXT C
LISTOFFSET I
No EXPORT or CHANGING parameters.
Tables:
Table parameter: Reference structure: Reference type:
LISTDESC RSAQLDESC
FPAIRS RSAQFPAIRS
DTAB

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

System Response

Error message

How to fix this error?

Only function modules that have an interface like the one shown above
can be used as additional function pool functions.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AQ022 - Incorrect interface for assigned function module ?

  The SAP error message AQ022, which states "Incorrect interface for assigned function module," typically occurs in the context of SAP's Application Queue (AQ) framework. This error indicates that there is a mismatch between the expected interface of a function module and the actual interface that has been defined or assigned to it.
  Causes:
  
  Mismatch in Function Module Signature: The function module that is assigned to the queue may have been changed (e.g., parameters added, removed, or modified) after it was assigned to the queue.
  Incorrect Assignment: The function module assigned to the queue may not be the correct one, or it may not be designed to handle the specific queue's data structure.
  Transport Issues: If the function module was transported from one system to another, the interface might not have been correctly updated or synchronized.
  Development Changes: Changes made in the development environment that have not been properly reflected in the production environment can lead to this error.
  
  Solutions:
  
  Check Function Module Interface: Verify the interface of the function module assigned to the queue. Ensure that it matches the expected parameters and structure defined in the queue configuration.
  Reassign Function Module: If the function module has been modified, consider reassigning it to the queue or creating a new function module with the correct interface.
  Transport Consistency: Ensure that all relevant transports have been correctly applied across systems. Check for any inconsistencies between development, quality assurance, and production environments.
  Debugging: Use transaction codes like SE37 (Function Builder) to check the function module's definition and SE80 (Object Navigator) to review the queue configuration.
  Check for Notes: Look for SAP Notes related to this error message. Sometimes, SAP provides patches or updates that address specific issues related to function modules and queues.
  
  Related Information:
  
  Transaction Codes: 
  
  SE37: Function Module Maintenance
  SE80: Object Navigator
  SMQ1/SMQ2: Monitor inbound and outbound queues
  
  
  Documentation: Review SAP documentation on the Application Queue framework for more details on how to configure and manage queues and function modules.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the root cause of the AQ022 error and implement a suitable solution.