How To Fix SWF_EXP_001008 - System expression expected (expression '&1', position &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: SWF_EXP_001 - Expression Service Messages

• Message number: 008

• Message text: System expression expected (expression '&1', position &2)

What causes this issue?

The specified expression '&V1&' could not be interpreted as a system
expression.

System Response

The expression is not syntactically correct and cannot be processed.

How to fix this error?

Change the expression into a valid system expression. A system
expression begins and ends with the reserved character '%'. One of the
following expression types can be specified between these two
characters:
A field of the ABAP system table SYST. Example: %UZEIT% for component
SYST-UZEIT.
A workflow system expression, in other words, a component of the
workflow system element _WFSYST. Example: %_WFSYST.STRING.SPACE% for the
constant 'space'.
The call of a static method: %<class name>.<(>
<<)>method name> ( <parameter list> )%

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message SWF_EXP_001008 - System expression expected (expression '&1', position &2) ?

  The SAP error message SWF_EXP_001008 indicates that there is an issue with a system expression in a workflow. Specifically, it means that the system expected a valid expression but encountered an invalid one instead. The message provides details about the problematic expression (&1) and its position (&2).
  Cause
  The error can occur due to several reasons:
  
  Syntax Error: The expression may contain syntax errors or invalid characters.
  Incorrect Expression Type: The expression might not be of the expected type or format.
  Missing Variables: The expression may reference variables or elements that are not defined or available in the current context.
  Configuration Issues: There may be issues in the workflow configuration or the way expressions are defined.
  
  Solution
  To resolve the error, you can follow these steps:
  
  
  Check the Expression: Review the expression indicated in the error message. Ensure that it is correctly formatted and adheres to the expected syntax.
  
  
  Validate Variables: Ensure that all variables referenced in the expression are defined and accessible in the context where the expression is being evaluated.
  
  
  Review Workflow Configuration: Check the workflow configuration for any inconsistencies or misconfigurations that could lead to this error.
  
  
  Use Debugging Tools: Utilize SAP's debugging tools to step through the workflow and identify where the expression is failing. This can help pinpoint the exact issue.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific expression syntax and requirements.
  
  
  Test in Isolation: If possible, isolate the expression and test it independently to see if it produces the expected results.
  
  
  Seek Help from SAP Community: If the issue persists, consider reaching out to the SAP community or support for further assistance.
  
  
  Related Information
  
  Workflow Management: Understanding how workflows are structured and how expressions are evaluated can help in troubleshooting.
  SAP Notes: Check for any relevant SAP Notes that might address known issues related to this error message.
  Transaction Codes: Familiarize yourself with transaction codes related to workflow management, such as SWDD (Workflow Builder) and SWI1 (Work Item Selection).
  
  By following these steps, you should be able to identify and resolve the cause of the SWF_EXP_001008 error in your SAP system.