How To Fix SALV_EXCEPTION002 - Data cannot be set again in event handlers

SAP Error Message - Details

• Message type: E = Error

• Message class: SALV_EXCEPTION - Exception Messages

• Message number: 002

• Message text: Data cannot be set again in event handlers

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SALV_EXCEPTION002 - Data cannot be set again in event handlers ?

  The SAP error message SALV_EXCEPTION002 typically occurs in the context of using the SAP ALV (ABAP List Viewer) framework, particularly when working with event handlers in the context of the SALV (Simple ALV) classes. This error indicates that there is an attempt to set data in an event handler after it has already been set, which is not allowed.
  
  Cause:
  The error is usually caused by one of the following scenarios:
  
  Multiple Data Assignments: You may be trying to assign data to the ALV output multiple times within the same event handler. Once the data is set for the ALV, it cannot be modified again in the same event context.
  Incorrect Event Handling: The event handler might be incorrectly implemented, leading to attempts to set data after it has already been processed.
  Re-entrant Calls: If the event handler is called multiple times (for example, due to user interactions), it may lead to this error if