How To Fix ESH_OM_OBJ_MODEL_RP2324 - 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: 324

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

What causes this issue?

All key fields of node &v2& of object type &v1& are specified in the
foreign key definition of the association. In this case only a
cardinality "Exactly one" or "Up to one" makes 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_RP2324 - Cardinality "&3" does not fit to foreign key definitions ?

  The SAP error message ESH_OM_OBJ_MODEL_RP2324 indicates a problem related to the cardinality of a relationship in the context of the Enterprise Search (ESH) object model. Specifically, it suggests that the cardinality defined for a certain relationship does not match the foreign key definitions in the underlying database or data model.
  Cause:
  
  Mismatch in Cardinality: The cardinality defined in the object model (e.g., one-to-many, many-to-one) does not align with the foreign key constraints in the database. For example, if the object model defines a one-to-many relationship but the foreign key in the database only allows for a one-to-one relationship, this error will occur.
  Incorrect Configuration: There may be an error in the configuration of the object model or the foreign key definitions, leading to inconsistencies.
  Data Model Changes: If there have been recent changes to the data model or the underlying database schema, these changes may not have been reflected in the object model configuration.
  
  Solution:
  
  Review Object Model Configuration: Check the configuration of the object model in the SAP system. Ensure that the cardinality defined for the relationships matches the foreign key definitions in the database.
  Check Foreign Key Definitions: Review the foreign key constraints in the database to ensure they are correctly defined and align with the expected cardinality in the object model.
  Adjust Cardinality: If necessary, adjust the cardinality in the object model to match the foreign key definitions. This may involve changing the relationship type from one-to-many to one-to-one or vice versa.
  Rebuild Indexes: After making changes, it may be necessary to rebuild the indexes or refresh the search model to ensure that the changes take effect.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version of the ESH you are using for any additional guidance or known issues.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Use transaction codes like SE11 (Data Dictionary) to view and modify database tables and foreign key definitions, and SE80 (Object Navigator) to work with the object model.
  Debugging: If the issue persists, consider enabling debugging to trace the execution and identify where the mismatch occurs.
  
  If you continue to experience issues after following these steps, it may be beneficial to reach out to SAP support or consult with a technical expert familiar with the ESH configuration.