How To Fix WL382 - Expression '&' for task: Error during evaluation or incorrect data type

WL382 - Overview

• Message type: E = Error

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

• Message number: 382

• Message text: Expression '&' for task: Error during evaluation or incorrect data type

What causes this issue?

Expression '&V1&' should return a task for Workflow step no. &V4&.
However, the result does not have the correct data type or returns
errors during the evaluation:
Expression:,,'&V1&'
Value:,,,,'&V2&'
ABAP type:,,'&V3&'

System Response

The Workflow was stopped and given an error status.

How to fix this error?

Please correct the definition or implementation of the expression to
return a value with reference to the DDIC domain HROBJEC_14 (ABAP type:
C14) liefert. You should note that numbers alone may not be used
because they must be preceded by an org. object type "T ...", "WF...",
etc.
Multi-line elements and object references are also not possible at this
point.
A workflow which has been stopped can be continued by selecting the
function <LS>Restart after error</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WL382 - Expression '&' for task: Error during evaluation or incorrect data type ?

  The SAP error message WL382, which states "Expression '&' for task: Error during evaluation or incorrect data type," typically occurs in the context of workflow or task evaluation in SAP systems. This error indicates that there is an issue with the expression being evaluated, which could be due to a variety of reasons, such as incorrect data types, syntax errors, or logical errors in the workflow definition.
  Causes of WL382 Error
  
  
  Incorrect Data Type: The expression may be trying to evaluate data types that are incompatible. For example, trying to perform arithmetic operations on string data types.
  
  
  Syntax Errors: There may be a syntax error in the expression itself, such as missing operators, parentheses, or incorrect function usage.
  
  
  Null or Undefined Values: The expression might be referencing variables or fields that are null or not defined, leading to evaluation errors.
  
  
  Logical Errors: The logic of the expression may not be valid for the context in