How To Fix USMD1063 - Data model &1, entity type &2: Not enough "leading" relationships

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD1 - Datenmodel

• Message number: 063

• Message text: Data model &1, entity type &2: Not enough "leading" relationships

What causes this issue?

Entity types with <DS:DE.USMD_USAGE_TYPE>storage and use type</> <ls>1
</> without a data element must be used as <ls>to-entity types</> in at
least two relationships with the relationship type <ls>Leading</> when
the cardinality 1:N is used. This requirement is not fulfilled.

System Response

The data model cannot be saved or activated.

How to fix this error?

Make sure that the entity type is used as the <ls>To-Entity Type</> in
two or more relationships with the relationship type <ls>Leading</>.

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 USMD1063 - Data model &1, entity type &2: Not enough "leading" relationships ?

  The SAP error message USMD1063 typically occurs in the context of SAP Master Data Governance (MDG) when there is an issue with the data model configuration, specifically related to the relationships defined between entities in the data model.
  Cause:
  The error message "Not enough 'leading' relationships" indicates that the system has identified that there are insufficient leading relationships defined for the specified entity type in the data model. Leading relationships are crucial for establishing the hierarchy and navigation paths between different entities in the data model. If these relationships are not properly defined, it can lead to issues in data processing, validation, or display.
  Solution:
  To resolve the USMD1063 error, you can take the following steps:
  
  
  Check Data Model Configuration:
  
  Go to the Data Model configuration in the SAP MDG application.
  Verify the relationships defined for the entity type mentioned in the error message.
  Ensure that there are enough leading relationships defined to meet the requirements of the data model.
  
  
  
  Define Leading Relationships:
  
  If you find that there are not enough leading relationships, you will need to define additional relationships.
  This can typically be done in the Data Model configuration area where you can add or modify relationships between entities.
  
  
  
  Review Documentation:
  
  Consult the SAP documentation or help resources related to the specific data model you are working with. This can provide insights into the expected relationships and configurations.
  
  
  
  Test Changes:
  
  After making changes to the data model, test the configuration to ensure that the error is resolved and that the data model behaves as expected.
  
  
  
  Consult with Experts:
  
  If you are unsure about how to proceed or if the issue persists, consider reaching out to SAP support or consulting with an SAP MDG expert who can provide guidance based on your specific configuration and requirements.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  MDG Configuration Guides: Review the configuration guides for SAP MDG, which often include best practices for defining data models and relationships.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the issue related to the USMD1063 error message in SAP MDG.