How To Fix ESH_OM_OBJ_MODEL_RP2700 - Reverse/source 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: 700

• Message text: Reverse/source 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 composition or at least one foreign key
definition has the join-operator =.
Thus maybe the reverse/source 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?

In the modeler for search and analytics adjust the reverse cardinality
or the foreign key definition.
When importing data adjust the source 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_RP2700 - Reverse/source cardinality "&3" does not fit to foreign key definitions ?

  The SAP error message ESH_OM_OBJ_MODEL_RP2700 indicates an issue 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 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 foreign key definitions in the database. Cardinality refers to the number of instances of one entity that can or must be associated with each instance of another entity. The error message indicates that the reverse or source cardinality defined in the model does not align with the foreign key constraints that have been set up in the database.
  Possible Causes:
  
  Incorrect Cardinality Definition: The cardinality defined in the object model does not match the foreign key constraints in the underlying database tables.
  Modeling Errors: There may be errors in the way the object model is defined, such as incorrect relationships or missing foreign key definitions.
  Database Schema Changes: If there have been changes to the database schema (e.g., changes in foreign key relationships), the object model may not have been updated accordingly.
  Data Inconsistencies: There may be inconsistencies in the data that violate the defined foreign key constraints.
  
  Solution:
  To resolve the ESH_OM_OBJ_MODEL_RP2700 error, you can follow these steps:
  
  
  Review Cardinality Definitions: Check the cardinality definitions in the object model and ensure they match the foreign key definitions in the database. Adjust the cardinality if necessary.
  
  
  Check Foreign Key Constraints: Verify the foreign key constraints in the database tables involved. Ensure that they are correctly defined and that they align with the relationships in the object model.
  
  
  Update Object Model: If there have been changes to the database schema, update the object model to reflect these changes. This may involve redefining relationships or adjusting cardinality.
  
  
  Data Validation: Validate the data in the tables to ensure that there are no inconsistencies that could lead to violations of foreign key constraints.
  
  
  Rebuild or Refresh the Model: In some cases, it may be necessary to rebuild or refresh the object model to ensure that it accurately reflects the current state of the database.
  
  
  Consult Documentation: Refer to SAP documentation or support resources for specific guidance related to the version of SAP you are using, as there may be version-specific considerations.
  
  
  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 to see if other users have encountered similar issues and what solutions they have found.
  SAP Help Portal: Utilize the SAP Help Portal for detailed documentation on object modeling and cardinality definitions.
  
  By following these steps, you should be able to identify and resolve the cause of the ESH_OM_OBJ_MODEL_RP2700 error in your SAP environment.