How To Fix CM_SUB_MLI054 - Specification inherits value assignment more than once; cannot overwrite

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_SUB_MLI - Messages for Multilevel Inheritance

• Message number: 054

• Message text: Specification inherits value assignment more than once; cannot overwrite

What causes this issue?

The value assignment instance you selected belongs to a source
specification whose data is passed on to the current target
specification. These two specifications are linked together by several
inheritance relationships, however, whose inheritance templates have
disjunctive usage information. The usages of the selected value
assignment instance mean that it is affected by more than one of these
relationships simultaneously.

System Response

In this case, it is not possible to overwrite the value assignment
instance.

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.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_SUB_MLI054 - Specification inherits value assignment more than once; cannot overwrite ?

  The SAP error message CM_SUB_MLI054 indicates that there is an issue with the inheritance of value assignments in a specification. This typically occurs in the context of SAP's Product Lifecycle Management (PLM) or Material Management (MM) modules, where specifications are used to define the characteristics and properties of materials or products.
  Cause:
  The error arises when a specification attempts to inherit a value assignment from multiple sources, leading to ambiguity. This can happen in the following scenarios:
  
  A specification is set up to inherit properties from multiple parent specifications or templates that define the same value assignment.
  There are conflicting definitions of the same characteristic in the parent specifications, causing SAP to be unable to determine which value assignment to use.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Inheritance Structure:
  
  Check the inheritance structure of the specification that is causing the error. Identify all parent specifications and templates that are being referenced.
  Ensure that the same value assignment is not being inherited from multiple sources.
  
  
  
  Consolidate Value Assignments:
  
  If the same characteristic is defined in multiple parent specifications, consider consolidating these definitions. Choose a single source for the value assignment to avoid conflicts.
  
  
  
  Modify Specifications:
  
  If necessary, modify the specifications to remove or adjust the conflicting value assignments. This may involve editing the parent specifications or the child specification that is causing the error.
  
  
  
  Use Unique Value Assignments:
  
  Ensure that each characteristic in the specification has a unique value assignment. If a characteristic needs to be inherited, it should only be inherited from one parent specification.
  
  
  
  Check for Updates:
  
  If you are using a specific version of SAP, check for any updates or patches that may address this issue. Sometimes, bugs in the software can lead to unexpected behavior.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more detailed guidance on managing specifications and value assignments.
  
  
  
  Seek Support:
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support or your internal SAP team for further assistance.
  
  
  
  Related Information:
  
  SAP PLM: Understanding how specifications and value assignments work in SAP Product Lifecycle Management can help in managing these errors effectively.
  Material Master Data: Familiarity with how material master data is structured and how specifications relate to it can provide insights into resolving conflicts.
  Training and Resources: Consider training sessions or resources on SAP PLM and specification management to better understand the system's behavior and best practices.
  
  By following these steps, you should be able to resolve the CM_SUB_MLI054 error and ensure that your specifications are correctly set up without conflicting value assignments.