How To Fix IST30021 - Customer exit &1 in &2 is not active

SAP Error Message - Details

• Message type: E = Error

• Message class: IST30 - Contract A/R + A/P - Paying - Dunning - Disconnect..IST/FICA

• Message number: 021

• Message text: Customer exit &1 in &2 is not active

What causes this issue?

Enhancement (user exit) is not active.

How to fix this error?

Proceed as follows:
Define your own customer project.
Define entries for SAP enhancement &V3& in the &V4& component.
Save your source code in the include program module provided for this
purpose.
Activate your project.
<DS:TRAN.CMOD>Perform function</>

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IST30021 - Customer exit &1 in &2 is not active ?

  The SAP error message IST30021, which states "Customer exit &1 in &2 is not active," typically occurs when a specific customer exit (a type of enhancement or modification point in SAP) is not activated in the system. Customer exits allow for custom code to be executed at certain points in standard SAP programs, and if they are not activated, the system cannot execute the associated custom logic.
  Cause:
  
  Inactive Customer Exit: The specific customer exit referenced in the error message is not activated in the system.
  Missing Implementation: The implementation of the customer exit may not have been created or activated.
  Transport Issues: If the customer exit was recently transported from another system, it may not have been activated in the target system.
  
  Solution:
  
  
  Activate the Customer Exit:
  
  Go to transaction code SMOD (for enhancements) or CMOD (for projects).
  In SMOD, enter the name of the customer exit (the first part of the error message, &1).
  Check if the exit is active. If not, you may need to activate it.
  If you are using a project in CMOD, ensure that the project is activated and that the customer exit is included in the project.
  
  
  
  Check Implementation:
  
  If the customer exit is not implemented, you may need to create an implementation for it.
  Use transaction code CMOD to create or modify the project that includes the customer exit.
  
  
  
  Transport Request:
  
  If the customer exit was transported, ensure that the transport request was successfully imported and that the exit is activated in the target system.
  
  
  
  Consult Documentation:
  
  Review any documentation related to the specific customer exit to understand its purpose and any prerequisites for activation.
  
  
  
  Check for Dependencies:
  
  Some customer exits may depend on other enhancements or configurations. Ensure that all related components are properly set up.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the specific customer exit.
  SAP Community: The SAP Community forums can be a valuable resource for troubleshooting and finding solutions from other users who may have encountered similar issues.
  Development Team: If you are not familiar with the customer exit or its implementation, consult with your development team or SAP consultants who can provide insights and assistance.
  
  By following these steps, you should be able to resolve the IST30021 error and activate the necessary customer exit in your SAP system.