How To Fix COM_PME_PARSER138 - Attribute variable &2 (facet &1) does not appear in the execution section

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_PME_PARSER - Configuration

• Message number: 138

• Message text: Attribute variable &2 (facet &1) does not appear in the execution section

What causes this issue?

Variables in the UNDO section of a rule must be used in the execution
section, too (THEN DO).
This is not the case with this attribute facet reference.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message COM_PME_PARSER138 - Attribute variable &2 (facet &1) does not appear in the execution section ?

  The SAP error message COM_PME_PARSER138 indicates that there is an issue with the definition of an attribute variable in a Business Object (BO) or a similar context within SAP. Specifically, the error states that the attribute variable (denoted as &2) for a certain facet (denoted as &1) does not appear in the execution section of the code or configuration.
  
  Cause:
  This error typically arises due to one of the following reasons:
  
  Missing Attribute Definition: The attribute variable is defined in the facet but is not included in the execution section of the code, which means that the system cannot find the necessary definition to execute the logic.
  Typographical Error: There may be a typo in the attribute name or facet name, leading to a mismatch between the definition and the execution.
  Incorrect Configuration: The configuration of the Business Object or the related components may not be set up correctly, leading to missing references.
  Versioning Issues: If