How To Fix WTY091 - Relation type &1 is not allowed between versions

SAP Error Message - Details

• Message type: E = Error

• Message class: WTY - Warranty processing

• Message number: 091

• Message text: Relation type &1 is not allowed between versions

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• What is the cause and solution for SAP error message WTY091 - Relation type &1 is not allowed between versions ?

  SAP Error Message:
  
  WTY091 - Relation type &1 is not allowed between versions
  
  Cause:
  This error occurs when you try to create or maintain a relationship (dependency) between two objects (such as BOMs, documents, or engineering change management objects) where the relation type specified is not permitted between different versions of these objects.
  In SAP Engineering Change Management (ECM) or Document Management System (DMS), certain relation types are restricted to be used only between objects of the same version or only between objects of different versions. If you attempt to assign a relation type that is not allowed between versions, the system throws this error.
  
  Explanation:
  
  Relation types define how objects are linked (e.g., "is replaced by", "is part of", "is referenced by").
  Some relation types are only valid between objects of the same version.
  Others may be valid only between objects of different versions.
  If you try to assign a relation type that violates these rules, SAP raises WTY091.
  
  
  Solution:
  
  
  Check the relation type definition:
  
  Go to transaction CC01 (Change Number Types) or CC02 (Change Number Types - Change) or the relevant customizing for relation types.
  Verify the settings for the relation type &1 (the one causing the error).
  Check if the relation type is allowed between different versions or only within the same version.
  
  
  
  Adjust the relation type or the objects:
  
  If the relation type is not allowed between versions, either:
  
  Change the relation type to one that is allowed between versions.
  Or create the relation between objects of the same version.
  
  
  
  
  
  Review the versions of the objects:
  
  Check the versions of the objects you are trying to link.
  If they differ, and the relation type does not allow cross-version linking, consider aligning the versions or using a different relation type.
  
  
  
  Consult customizing for relation types:
  
  In customizing (SPRO), navigate to:
  Logistics - General > Engineering Change Management > Relations > Define Relation Types
  Review the settings for the relation type &1, especially the "Allowed between versions" flag.
  
  
  
  
  Additional Information:
  
  This error is common in Engineering Change Management (ECM) and Document Management System (DMS) scenarios.
  Relation types are critical for maintaining correct dependencies and change impact analysis.
  Proper configuration of relation types ensures consistent and valid object relationships.
  If unsure about which relation type to use, consult your SAP ECM or DMS functional consultant.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WTY091 Relation type &1 is not allowed between versions
  
  
  Cause
  Relation type &1 is not permitted between different versions of objects
  
  
  Solution
  Use a relation type allowed between versions or link objects of the same version
  
  
  Transaction
  Check relation types in customizing or via CC01/CC02
  
  
  Module
  Engineering Change Management (ECM), Document Management System (DMS)
  
  
  
  
  If you provide the exact relation type &1 (e.g., "REPL" for replacement), I can give more specific advice.