How To Fix GB104 - Rule & is already assigned to a different validation class

GB104 - Overview

• Message type: E = Error

• Message class: GB - Messages used by the Boolean code generator

• Message number: 104

• Message text: Rule & is already assigned to a different validation class

What causes this issue?

A subrule exists with this name but it is a different type to the one
that you are using.

System Response

None.

How to fix this error?

Create a new subrule with a new name.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB104 - Rule & is already assigned to a different validation class ?

  The SAP error message GB104 indicates that a specific rule (in this case, a validation rule) is already assigned to a different validation class. This typically occurs in the context of SAP's validation and substitution functionality, which is used to ensure data integrity and consistency in financial documents.
  
  Cause:
  
  Duplicate Assignment: The rule you are trying to assign is already linked to another validation class. In SAP, each validation rule can only be assigned to one validation class at a time.
  Configuration Error: There may be a misconfiguration in the validation rules or classes, leading to conflicts.
  System Migration or Changes: If there have been recent changes or migrations in the system, it could lead to inconsistencies in rule assignments.
  
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Go to the transaction code for validation (e.g., OB28 for validation rules).
  Look for the rule in question and check which validation class it is currently assigned to.
  
  
  
  Reassign the Rule:
  
  If you need to