How To Fix ESH_OM_OBJ_MODEL_RP2703 - Cardinality "&3" does not fit to foreign key definitions

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_OM_OBJ_MODEL_RP2 - Object Model Repository (2)

• Message number: 703

• Message text: Cardinality "&3" does not fit to foreign key definitions

What causes this issue?

Not all key fields of node &v2& of object type &v1& are specified in the
foreign key definition of the association
Thus maybe the cardinality "&v3&" may not make sense.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Adjust the cardinality or the foreign key definition.

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 ESH_OM_OBJ_MODEL_RP2703 - Cardinality "&3" does not fit to foreign key definitions ?

  The SAP error message ESH_OM_OBJ_MODEL_RP2703 indicates a problem with the cardinality of a relationship in the object model, specifically related to foreign key definitions. This error typically arises in the context of the SAP Enterprise Search or SAP HANA modeling, where the relationships between different entities (or tables) are defined.
  Cause:
  The error message suggests that there is a mismatch between the expected cardinality of a relationship and the actual cardinality defined in the foreign key constraints. Cardinality refers to the number of instances of one entity that can or must be associated with instances of another entity. Common cardinalities include:
  
  One-to-One (1:1)
  One-to-Many (1:N)
  Many-to-One (N:1)
  Many-to-Many (N:N)
  
  In this case, the cardinality "&3" does not align with what is defined in the foreign key constraints, which could be due to:
  
  Incorrect Foreign Key Definition: The foreign key relationship may not be defined correctly in the database schema.
  Modeling Errors: There may be errors in the data model or object model configuration that lead to this inconsistency.
  Data Integrity Issues: Existing data may violate the expected cardinality, leading to this error when the system tries to enforce the foreign key constraints.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review Foreign Key Definitions: Check the foreign key definitions in the database schema to ensure they are correctly defined according to the intended relationships. Make sure that the cardinality matches the business logic.
  
  
  Adjust the Data Model: If the data model is incorrect, you may need to adjust it to reflect the correct relationships. This could involve modifying the object model or the underlying database tables.
  
  
  Data Cleanup: If there are existing data integrity issues, you may need to clean up the data to ensure that it adheres to the defined foreign key constraints. This might involve deleting or updating records that violate the constraints.
  
  
  Rebuild the Object Model: If the issue persists, consider rebuilding the object model or re-importing the data model to ensure that all definitions are up to date and consistent.
  
  
  Consult Documentation: Refer to SAP documentation or community forums for specific guidance related to the version of SAP you are using, as there may be version-specific considerations.
  
  
  Testing: After making changes, thoroughly test the system to ensure that the error is resolved and that the relationships function as expected.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Documentation: Review SAP documentation on data modeling and foreign key constraints for best practices and guidelines.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.