How To Fix SWL020 - Event arrived in customer-specific function module

SWL020 - Overview

• Message type: E = Error

• Message class: SWL - WF: New User Interface Messages in Workflow (Client)

• Message number: 020

• Message text: Event arrived in customer-specific function module

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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SWL020 - Details

• The SAP error message SWL020, which states "Event arrived in customer-specific function module," typically occurs in the context of SAP Workflow. This message indicates that an event was triggered, but the system encountered an issue while processing it in a customer-specific function module.
  
  Cause:
  
  Custom Code Issues: The most common cause of this error is a problem in the custom function module that has been implemented to handle the event. This could be due to syntax errors, logical errors, or unhandled exceptions in the code.
  Event Configuration: The event may not be properly configured in the workflow or the event linkage may not be correctly set up.
  Missing Data: The function module may be expecting certain data or parameters that are not being provided when the event is triggered.
  Authorization Issues: The user or process triggering the event may not have the necessary authorizations to execute the function module.
  
  
  Solution:
  
  
  Debugging the Function Module: 
  
  Use transaction SE37