How To Fix APS_CKE_PARSER124 - Removing the key field &1 is incompatible.

SAP Error Message - Details

• Message type: E = Error

• Message class: APS_CKE_PARSER - CDS Key user tool - AST handler messages

• Message number: 124

• Message text: Removing the key field &1 is incompatible.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message APS_CKE_PARSER124 - Removing the key field &1 is incompatible. ?

  The SAP error message APS_CKE_PARSER124, which states "Removing the key field &1 is incompatible," typically occurs in the context of data modeling or configuration in SAP systems, particularly when working with data sources, InfoObjects, or data models in SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  This error generally arises when there is an attempt to remove a key field from a data structure (like an InfoObject or a data model) that is essential for maintaining the integrity of the data model. Key fields are critical for uniquely identifying records in a database table or data structure, and removing them can lead to inconsistencies or loss of data integrity.
  Solution:
  To resolve this error, consider the following steps:
  
  
  Review the Data Model: Check the data model or InfoObject where the error is occurring. Identify the key field that is being attempted to be removed.
  
  
  Assess Dependencies: Determine if there are any dependencies or relationships that rely on the key field. This could include other InfoObjects, data sources, or queries that utilize this key field.
  
  
  Modify the Design: If the key field is essential for the data model, consider keeping it. If you believe that the key field can be removed, ensure that all dependencies are addressed and that the data model can function correctly without it.
  
  
  Consult Documentation: Refer to SAP documentation or guidelines regarding the specific data model or InfoObject you are working with. There may be specific rules or best practices regarding key fields.
  
  
  Testing: After making changes, thoroughly test the data model or InfoObject to ensure that it functions correctly without the key field, if you decide to proceed with the removal.
  
  
  Seek Help: If you are unsure about the implications of removing the key field, consider consulting with a colleague or an SAP expert who has experience with data modeling in your specific SAP environment.
  
  
  Related Information:
  
  Key Fields in SAP: Key fields are used to uniquely identify records in a database. In SAP BW, InfoObjects can have key fields that are crucial for data integrity.
  Data Modeling Best Practices: Familiarize yourself with best practices for data modeling in SAP BW or HANA to avoid similar issues in the future.
  SAP Notes and Community: Check SAP Notes for any known issues or patches related to this error. The SAP Community forums can also be a valuable resource for troubleshooting and solutions.
  
  By following these steps, you should be able to address the APS_CKE_PARSER124 error effectively.