How To Fix USMD1055 - Data model &1, entity type &2, relat. &3: Relationship type is invalid

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 055

• Message text: Data model &1, entity type &2, relat. &3: Relationship type is invalid

What causes this issue?

Relationships with <LS>Qualifying</> as the relationship type are only
allowed for to-entity types with storage and use type <LS>4</>.

System Response

The data model cannot be saved or activated.

How to fix this error?

Specify a different relationship type.

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 USMD1055 - Data model &1, entity type &2, relat. &3: Relationship type is invalid ?

  The SAP error message USMD1055 indicates that there is an issue with a relationship type in a data model, specifically in the context of Master Data Governance (MDG). This error typically arises when the system encounters an invalid relationship type for a specified entity type within a data model.
  Cause:
  The error can be caused by several factors, including:
  
  Invalid Relationship Type: The relationship type specified in the data model does not exist or is not defined correctly.
  Configuration Issues: There may be issues in the configuration of the data model or the relationships between entities.
  Data Model Changes: If there have been recent changes to the data model, such as adding or modifying entity types or relationships, it may lead to inconsistencies.
  Missing Customization: If the relationship type is a custom one, it may not have been properly defined or activated in the system.
  
  Solution:
  To resolve the USMD1055 error, you can follow these steps:
  
  
  Check Relationship Type: Verify that the relationship type specified in the error message is valid and exists in the system. You can do this by checking the configuration settings for the data model in the MDG application.
  
  
  Review Data Model Configuration:
  
  Go to the MDG customizing settings and review the data model configuration.
  Ensure that the entity types and their relationships are correctly defined.
  
  
  
  Validate Customizations: If you are using custom relationship types, ensure that they are properly defined in the system. Check if they are activated and correctly linked to the relevant entity types.
  
  
  Test Changes: If you have made any changes to the data model or relationships, test the changes in a development or test environment before moving them to production.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of MDG you are using for any known issues or additional guidance.
  
  
  Seek Support: If the issue persists after checking the above points, consider reaching out to SAP support or consulting with an SAP expert who specializes in MDG.
  
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like MDGIMG to access the MDG customizing settings.
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  Community Forums: SAP Community and other forums can be helpful for finding similar issues faced by other users and their solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the USMD1055 error in your SAP system.