How To Fix WER251 - Target structure cannot be initial

WER251 - Overview

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 251

• Message text: Target structure cannot be initial

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WER251 - Target structure cannot be initial ?

  SAP Error Message:
  WER251 - Target structure cannot be initial
  
  
  Cause:
  This error typically occurs in SAP Workflow or Business Object Repository (BOR) contexts when a target structure (an importing parameter or a target container element) is expected to be filled with data but is found to be empty (initial) at runtime. The system expects the target structure to have some content, but it remains uninitialized or empty, which leads to this error.
  Common scenarios include:
  
  A workflow container element or BOR method parameter is not properly populated before being passed.
  A method or function module expects a non-initial structure as input or output, but the structure is left empty.
  Incorrect mapping or missing assignment in workflow container elements.
  The target structure is defined as a non-optional parameter but is not filled.
  
  
  
  Solution:
  
  
  Check the Workflow Container or BOR Method Parameters:
  
  Verify that the target structure is correctly filled before the step where the error occurs.
  Ensure that the container element or