How To Fix ESH_OM_OBJ_MODEL_RP2515 - Key field &4 cannot have semantics "Language Code"

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 515

• Message text: Key field &4 cannot have semantics "Language Code"

What causes this issue?

A node key field with semantics "Language Code" cannot be used in the
field mapping of an association or a composition if the node where the
field belongs to has at least one field that is flagged to "Contain
text".
Node key field &v4& is used in the field mapping of association ID &v1&
and node &v3& of object type &v2& has a field that is flagged to
"Contain text".

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?

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_RP2515 - Key field &4 cannot have semantics "Language Code" ?

  The SAP error message ESH_OM_OBJ_MODEL_RP2515, which states "Key field &4 cannot have semantics 'Language Code'," typically occurs in the context of the SAP Enterprise Search or SAP HANA environments. This error indicates that there is an issue with the configuration of a key field in a data model, specifically that a field designated as a key cannot be assigned the semantics of a language code.
  Cause:
  
  Incorrect Field Configuration: The field in question is likely configured as a key field in a data model but is also being assigned semantics that are not appropriate for a key field. Language codes are typically used for descriptive purposes and are not suitable as key identifiers.
  Data Model Definition Issues: There may be a misconfiguration in the data model definition where a language code field is incorrectly marked as a key field.
  Incompatibility with Search Framework: The search framework may not support language codes as key fields, leading to this error when trying to execute a search or query.
  
  Solution:
  
  Review Data Model Configuration: Check the configuration of the data model in the SAP system. Ensure that the field in question is not incorrectly marked as a key field. If it is, you may need to change its configuration.
  Adjust Field Semantics: If the field is intended to represent a language code, ensure that it is not set as a key field. Instead, it should be treated as a descriptive attribute.
  Modify the Data Source: If you are using a custom data source, review the data source definition and ensure that the key fields are correctly defined without including language code semantics.
  Consult Documentation: Refer to the SAP documentation for the specific version you are using to understand the correct configuration of key fields and semantics in the context of your data model.
  Testing: After making changes, test the data model to ensure that the error no longer occurs and that the search functionality works as expected.
  
  Related Information:
  
  SAP Notes and Knowledge Base Articles: Check SAP Notes for any known issues or patches related to this error message. SAP's support portal may have specific notes addressing this error.
  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 data modeling and the semantics of fields in SAP systems.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.