How To Fix WL423 - Error in resolution of rule '&1' for step '&2'

WL423 - Overview

• Message type: E = Error

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

• Message number: 423

• Message text: Error in resolution of rule '&1' for step '&2'

What causes this issue?

The function module for rule '&V1&' initialized an exception and
returned a message ("MESSAGE ... [RAISING ...]").

System Response

If the message is of type 'A', 'E' or ' ', the confirmation of the
current work item is recorded and the work procedure set to <ZH>error
</> status.
In all other cases, the message is logged as a warning and the work
procedure continues.

How to fix this error?

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.

WL423 - Details

• The SAP error message WL423, which states "Error in resolution of rule '&1' for step '&2'," typically occurs in the context of workflow processing. This error indicates that there is an issue with the resolution of a specific rule that is supposed to be executed in a workflow step. Here’s a breakdown of the potential causes, solutions, and related information for this error:
  Causes:
  
  Missing Rule Definition: The rule specified in the error message may not be defined in the system or may have been deleted.
  Incorrect Rule Configuration: The rule might be incorrectly configured, leading to an inability to resolve it during workflow execution.
  Authorization Issues: The user executing the workflow may not have the necessary authorizations to access the rule or the objects related to it.
  Data Issues: The data being processed in the workflow may not meet the criteria required for the rule to be resolved.
  Transport Issues: If the rule was recently