How To Fix USMD1592 - Data model &1, to-entity type &2: Invalid foreign key relationship &3

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 592

• Message text: Data model &1, to-entity type &2: Invalid foreign key relationship &3

What causes this issue?

Relationships with the type <ZK>foreign key relationship</> are only
allowed for To-entity types with <DS:DE.USMD_USAGE_TYPE>storage and use
types</> 1 or 4.

System Response

The data model cannot be saved or activated.

How to fix this error?

Edit the fields in the <LS>Fields of Foreign Key Relationships</> view
in Customizing activity <DS:SIMG.FMDM_USMD001>Edit Data Model</>.

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 USMD1592 - Data model &1, to-entity type &2: Invalid foreign key relationship &3 ?

  The SAP error message USMD1592 typically indicates an issue with a foreign key relationship in the data model you are working with in SAP Master Data Governance (MDG). This error occurs when there is an invalid foreign key relationship defined between entities in your data model.
  Cause:
  The error can be caused by several factors, including:
  
  
  Incorrect Foreign Key Definition: The foreign key relationship defined in the data model may not correspond to the actual structure of the underlying database tables or entities.
  
  
  Missing or Incorrect Mapping: The mapping between the source and target entities may be incorrect or missing, leading to an invalid reference.
  
  
  Data Integrity Issues: There may be existing data that violates the foreign key constraints, such as orphaned records that do not have corresponding entries in the referenced table.
  
  
  Changes in Data Model: If there have been recent changes to the data model, such as adding or removing entities or attributes, it may lead to inconsistencies in the foreign key relationships.
  
  
  Solution:
  To resolve the USMD1592 error, you can take the following steps:
  
  
  Check Foreign Key Definitions: Review the foreign key relationships defined in your data model. Ensure that they are correctly set up and correspond to the actual database structure.
  
  
  Validate Data Model: Use the data model validation tools available in SAP MDG to check for inconsistencies or errors in the data model.
  
  
  Review Mapping: Ensure that the mapping between the source and target entities is correctly defined. Make sure that all necessary fields are included and correctly referenced.
  
  
  Data Cleanup: If there are data integrity issues, you may need to clean up the data. This could involve removing or correcting orphaned records or ensuring that all foreign key references are valid.
  
  
  Consult Documentation: Refer to the SAP documentation for your specific version of MDG for any additional guidelines or troubleshooting steps related to foreign key relationships.
  
  
  Testing: After making changes, test the data model to ensure that the error is resolved and that the foreign key relationships are functioning as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  MDG Configuration: Familiarize yourself with the configuration settings in SAP MDG that pertain to data models and foreign key relationships.
  Community Forums: Engage with SAP community forums or support channels for additional insights or similar experiences from other users.
  
  By following these steps, you should be able to identify and resolve the issue causing the USMD1592 error in your SAP MDG environment.