How To Fix WTADDI_IDOC020 - User exit & is to be called

SAP Error Message - Details

• Message type: E = Error

• Message class: WTADDI_IDOC - Messages for Application Log LO-ADM/IDOC

• Message number: 020

• Message text: User exit & is to be called

What causes this issue?

You can change or enhance the additionals IDoc data using user exit
&V1&. The current <DS:NA.WTADDI_IDOC005>key</> and segment and
application data are transferred to the user exit.
&hints&
Information for chaging the additionals IDocs are to found in the
documentation for the relevant <DS:MO.EXIT_SAPLWTIP_001> user exit</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WTADDI_IDOC020 - User exit & is to be called ?

  The SAP error message:
  WTADDI_IDOC020 User exit & is to be called
  typically occurs in the context of IDoc processing, specifically when dealing with the Warehouse Management (WM) or Extended Warehouse Management (EWM) interfaces that use IDocs for data exchange.
  
  Cause
  
  
  The message indicates that a user exit (a custom enhancement point in SAP) is expected to be called during the IDoc processing, but either:
  
  The user exit is not implemented or activated.
  The system expects the user exit to perform some processing but it is missing or incomplete.
  The user exit is called but does not handle the required logic, causing the process to stop or raise this message.
  
  
  
  In other words, the standard SAP process expects a custom enhancement (user exit) to be executed at this point, but it is either not found or not properly implemented.
  
  
  
  Where does this happen?
  
  This message is common in scenarios where IDocs are used to transfer warehouse tasks or delivery data, for example:
  
  WM inbound/outbound processes.
  EWM integration with ERP via IDocs.
  Custom developments that require user exits to enhance or modify IDoc data processing.
  
  
  
  
  Solution
  
  
  Check the User Exit Implementation:
  
  Identify which user exit is expected to be called. The message usually comes with a user exit name or enhancement point.
  Common user exits related to IDoc processing in WM/EWM include:
  
  EXIT_SAPLVEDA_001 (for delivery processing)
  EXIT_SAPLVEDA_002
  Other enhancement spots related to IDoc inbound processing.
  
  
  
  
  
  Implement or Activate the User Exit:
  
  If the user exit is not implemented, implement it according to the business requirements.
  If it is implemented but inactive, activate it in transaction CMOD or SMOD.
  
  
  
  Check the Custom Code:
  
  Review the code in the user exit to ensure it correctly processes the IDoc segments.
  Make sure the exit does not raise errors or stop processing unexpectedly.
  
  
  
  Check Configuration:
  
  Verify that the IDoc processing configuration is correct.
  Ensure that the system is not expecting a user exit call where none is needed.
  
  
  
  Debugging:
  
  Use debugging tools to trace the IDoc processing and see where the message is triggered.
  Check the call stack to identify the missing or problematic user exit.
  
  
  
  
  Related Information
  
  
  User Exits and Enhancements:
  
  User exits are enhancement points provided by SAP to allow custom code without modifying standard SAP code.
  They are implemented via transactions SMOD (to find exits) and CMOD (to implement projects).
  
  
  
  IDoc Processing:
  
  IDocs are intermediate documents used for asynchronous data exchange.
  Processing IDocs often involves standard and custom logic, where user exits can be used to modify or validate data.
  
  
  
  SAP Notes and Documentation:
  
  Check SAP Notes related to the specific IDoc type or process.
  Review SAP Help Portal documentation on IDoc processing and user exits.
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Expected user exit for IDoc processing is missing, inactive, or incomplete.
  
  
  Solution
  Implement or activate the required user exit; verify custom code and configuration.
  
  
  Where
  IDoc inbound/outbound processing in WM/EWM or related warehouse interfaces.
  
  
  Tools
  Transactions SMOD, CMOD, debugging tools, SAP Notes.
  
  
  Additional
  Ensure business logic in user exit aligns with process requirements.
  
  
  
  
  If you provide the exact user exit name or the IDoc type, I can help you with more specific instructions or sample code snippets.