How To Fix USMD7028 - No primary persistence structure defined for entity &1 in data model &2

SAP Error Message - Details

• Message type: E = Error

• Message class: USMD7 - Validations and Derivations

• Message number: 028

• Message text: No primary persistence structure defined for entity &1 in data model &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message USMD7028 - No primary persistence structure defined for entity &1 in data model &2 ?

  The SAP error message USMD7028 indicates that there is no primary persistence structure defined for a specific entity in the data model you are working with. This error typically occurs in the context of SAP Master Data Governance (MDG) when trying to perform operations related to data models and entities.
  Cause:
  The error can be caused by several factors:
  
  Missing Configuration: The entity in question may not have a primary persistence structure defined in the data model configuration.
  Incorrect Data Model: The data model being used may not be correctly set up or may be missing necessary components.
  Transport Issues: If the data model was recently transported from another system, there may be inconsistencies or missing elements in the target system.
  Development Errors: Custom developments or modifications to the data model may have inadvertently removed or altered the primary persistence structure.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Data Model Configuration:
  
  Go to the SAP MDG configuration transaction (usually SPRO).
  Navigate to the relevant data model and check the configuration for the entity that is causing the error.
  Ensure that a primary persistence structure is defined for the entity.
  
  
  
  Define Primary Persistence Structure:
  
  If the primary persistence structure is missing, you will need to define it. This typically involves specifying the database table or structure that will hold the data for the entity.
  Make sure to activate the changes after defining the structure.
  
  
  
  Review Transport Requests:
  
  If the issue arose after a transport, check the transport logs to ensure that all necessary objects were transported correctly.
  If something is missing, you may need to re-transport the relevant objects.
  
  
  
  Check for Custom Developments:
  
  If there are custom developments related to the data model, review them to ensure they are not causing the issue.
  Make sure that any custom logic does not interfere with the standard persistence structures.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of MDG you are using for any known issues or additional configuration steps.
  
  
  
  Testing:
  
  After making the necessary changes, test the functionality again to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific notes related to error USMD7028, as they may provide additional insights or patches.
  MDG Documentation: Review the official SAP MDG documentation for guidance on configuring data models and entities.
  Community Forums: Consider searching or posting in SAP community forums for additional help from other users who may have encountered the same issue.
  
  By following these steps, you should be able to identify and resolve the cause of the USMD7028 error in your SAP MDG environment.