How To Fix SWF_RLS_001121 - Operator '&1': Expressions '&2' and '&3' cannot be compared

SWF_RLS_001121 - Overview

• Message type: E = Error

• Message class: SWF_RLS_001 - Condition Evaluation and Rule Evaluation

• Message number: 121

• Message text: Operator '&1': Expressions '&2' and '&3' cannot be compared

What causes this issue?

The following expressions refer to values that do not belong to value
categories:
&V2&
&V3&
These categories are:
Objects
Tables
Structures
Elementary values (numbers, character strings, date, time, ...)
In this way, for example, objects that have other objects, but that are
without tables, structures, or elementary values can be compared.

System Response

The condition entered is not syntactically correct in this format.

How to fix this error?

Correct the condition in row &V4& by using comparable data objects as
operands. 'F4 possible entries' are available both when entering
constants and also when entering expressions.

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.

SWF_RLS_001121 - Details

• The SAP error message SWF_RLS_001121 indicates that there is an issue with comparing two expressions in a workflow or rule set. This typically occurs when the data types of the expressions being compared are incompatible. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause
  
  Data Type Mismatch: The most common cause of this error is that the two expressions being compared are of different data types. For example, trying to compare a string with a number or a date with a string can lead to this error.
  Incorrect Configuration: The workflow or rule may be incorrectly configured, leading to invalid comparisons.
  Null Values: If one of the expressions evaluates to a null value, it may cause issues during comparison.
  
  Solution
  
  
  Check Data Types: Review the data types of the expressions involved in the comparison. Ensure that both expressions are of the same type. You may need to convert one of the expressions to