How To Fix USMD1036 - Data model &1: Multiple relationships between entity type &2 and &3

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 036

• Message text: Data model &1: Multiple relationships between entity type &2 and &3

What causes this issue?

Between the same entity types there can be only one <LS>leading</> or
<LS>qualifying</> relationship.

System Response

The data model cannot be saved or activated.

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 USMD1036 - Data model &1: Multiple relationships between entity type &2 and &3 ?

  The SAP error message USMD1036 indicates that there are multiple relationships defined between two entity types in a data model. This typically occurs in the context of SAP Master Data Governance (MDG) when you are trying to create or modify a data model that involves entities with relationships that are not uniquely defined.
  Cause:
  The error arises when:
  
  There are multiple relationships defined between the same pair of entity types (e.g., between entity type A and entity type B).
  The data model does not allow for multiple relationships between the same entities, which can lead to ambiguity in data processing and integrity issues.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Data Model:
  
  Open the data model in the SAP MDG modeling tools.
  Check the relationships defined between the entity types mentioned in the error message.
  
  
  
  Identify Duplicate Relationships:
  
  Look for any duplicate relationships between the specified entity types. This can be done by examining the relationship definitions in the data model.
  
  
  
  Remove or Consolidate Relationships:
  
  If you find multiple relationships, decide which one is necessary and remove the others.
  If the relationships serve different purposes, consider consolidating them into a single relationship with additional attributes to differentiate them.
  
  
  
  Validate the Data Model:
  
  After making changes, validate the data model to ensure that it complies with the requirements and does not produce any further errors.
  
  
  
  Test the Changes:
  
  Once the changes are made, test the data model to ensure that it functions as expected without any errors.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for Master Data Governance for detailed guidelines on data modeling and relationship management.
  SAP Community: Engage with the SAP Community forums to seek advice from other users who may have encountered similar issues.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MDGIMG for configuration and MDG_MDL for data model management.
  
  By following these steps, you should be able to resolve the USMD1036 error and ensure that your data model is correctly defined without multiple relationships between the same entity types.