How To Fix USMD1020 - Data model &1: From-entity type &2 and relationship have the same name

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 020

• Message text: Data model &1: From-entity type &2 and relationship have the same name

What causes this issue?

Since the from-entity type is also used as a higher-level key field, the
name must be unique.

System Response

The data model cannot be saved.

How to fix this error?

Use different names for the from-entity type and the relationship.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message USMD1020 - Data model &1: From-entity type &2 and relationship have the same name ?

  The SAP error message USMD1020 indicates that there is a naming conflict in the data model you are working with. Specifically, it states that the "From-entity type" and the "relationship" have the same name, which is not allowed in the data model.
  Cause:
  This error typically arises when you are defining entities and relationships in the SAP Master Data Governance (MDG) data model. The naming conflict occurs when:
  
  An entity type (e.g., a master data entity) and a relationship (which defines how two entities are related) are given the same name. 
  This can happen during the creation or modification of the data model, where the naming conventions are not adhered to.
  
  Solution:
  To resolve this error, you need to ensure that the names of your entity types and relationships are unique. Here are the steps you can take:
  
  
  Identify the Conflict: Check the data model definition to identify the specific entity type and relationship that share the same name. The error message will provide you with the names of the conflicting items.
  
  
  Rename the Relationship or Entity: 
  
  If the relationship and entity type have the same name, you can rename either the entity type or the relationship to ensure they are distinct.
  Choose a naming convention that clearly differentiates between entity types and relationships. For example, you might append a suffix to the relationship name (e.g., EntityType_Relationship).
  
  
  
  Validate the Data Model: After making the changes, validate the data model to ensure that there are no other naming conflicts and that the model is correctly defined.
  
  
  Transport Changes: If you are working in a development environment, ensure that you transport the changes to the appropriate environments (e.g., quality assurance, production) as needed.
  
  
  Related Information:
  
  Naming Conventions: It is a good practice to establish and follow naming conventions for entities and relationships in your data model to avoid such conflicts in the future.
  Documentation: Refer to SAP documentation for Master Data Governance for guidelines on data modeling and best practices.
  Testing: After resolving the issue, conduct thorough testing to ensure that the data model functions as expected without any further errors.
  
  By following these steps, you should be able to resolve the USMD1020 error and successfully define your data model in SAP MDG.