How To Fix SWF_EXP_001501 - Operator '&1': left operand missing

SWF_EXP_001501 - Overview

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 501

• Message text: Operator '&1': left operand 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_001501 - Operator '&1': left operand missing ?

  The SAP error message SWF_EXP_001501 with the description "Operator '&1': left operand missing" typically occurs in the context of workflow expressions in SAP Business Workflow. This error indicates that there is an issue with the expression used in a workflow step, specifically that the left operand of an operator is missing.
  
  Cause:
  The error is usually caused by one of the following:
  
  Incorrect Expression Syntax: The expression defined in the workflow step is not correctly formed. For example, if you are using an operator (like +, -, *, etc.) without a valid left operand.
  Missing Variable or Field: The variable or field that is expected to be on the left side of the operator is either not defined or is not accessible in the context of the workflow.
  Typographical Errors: There may be a typo in the expression that leads to the left operand being unrecognized.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check