How To Fix SWF_EXP_001503 - Operator '&1': result expression missing

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 503

• Message text: Operator '&1': result expression missing

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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Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_EXP_001503 - Operator '&1': result expression missing ?

  The SAP error message SWF_EXP_001503 indicates that there is a problem with an expression in a workflow. Specifically, the error message states that the result expression for an operator is missing. This typically occurs in the context of workflow definitions where an operator is expected to produce a result, but the expression that should yield that result is not defined or is incomplete.
  Cause:
  
  Missing Expression: The most common cause is that the workflow definition is missing a result expression for the specified operator.
  Incorrect Configuration: The operator may be incorrectly configured, leading to a situation where it does not have a valid expression to evaluate.
  Syntax Errors: There may be syntax errors in the expression that prevent it from being recognized as valid.
  Changes in Workflow: If the workflow was modified recently, it’s possible that changes led to the removal or alteration of the expected result expression.
  
  Solution:
  
  Check Workflow Definition: Open the workflow definition in the SAP Workflow Builder and locate the operator mentioned in the error message. Ensure that a valid result expression is defined for that operator.
  Define Result Expression: If the result expression is missing, add the appropriate expression that the operator should evaluate.
  Validate Syntax: Ensure that the syntax of the expression is correct. Use the syntax check feature in the Workflow Builder to identify any issues.
  Review Changes: If the workflow was recently modified, review the changes to identify what might have led to the missing expression.
  Test the Workflow: After making the necessary changes, test the workflow to ensure that it runs without errors.
  
  Related Information:
  
  Workflow Builder: This is the tool used to create and manage workflows in SAP. Familiarity with this tool is essential for troubleshooting workflow-related issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Documentation: Refer to the official SAP documentation for workflows to understand the expected structure and requirements for defining operators and expressions.
  
  If the issue persists after following these steps, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.