How To Fix WL383 - Illegal expression '&' for agent

WL383 - Overview

• Message type: E = Error

• Message class: WL - Workflow: run-time messages

• Message number: 383

• Message text: Illegal expression '&' for agent

What causes this issue?

Expression &V1& should provide a responsible agent for workflow step
number &V2&. However, the result does not have the correct data type or
gave errors in the evaluation:
Expression,,&V1&
ABAP type,,&V3&
Length,,&V4&

System Response

If no other valid agent (expression) was specified, the workflow has
been stopped and forced into the error status.

How to fix this error?

Correct the expression's definition/implementation so that it provides
a value with reference to the ABAP Dictionary structure <AB>SWHACTOR</>
(ABAP type: C14). In particular user names cannot be on their own here,
only with preceding organizational object type "US...".
Object references are not possible here either.
You can then continue a workflow that may have stopped with the
<LS>Restart After Error</> function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WL383 - Illegal expression '&' for agent ?

  The SAP error message WL383, which states "Illegal expression '&' for agent," typically occurs in the context of SAP Workflow or Business Process Management (BPM) when there is an issue with the expression used in a workflow agent determination.
  
  Cause:
  The error is usually caused by one of the following issues:
  
  Invalid Expression: The expression used to determine the agent is not valid. This could be due to syntax errors or the use of unsupported characters or operators.
  
  Configuration Issues: The agent determination configuration may not be set up correctly, leading to the system being unable to interpret the expression.
  Missing Data: Required data or parameters that the expression relies on may be missing or incorrectly defined.
  
  
  Solution:
  To resolve the WL383 error, you can take the following steps:
  
  
  Check the Expression:
  
  Review the expression used for agent determination. Ensure that it follows the correct syntax and does not contain illegal characters or operators.
  If the expression is complex, simplify