How To Fix APS_CCV_CHECK104 - Adding the key field &1 is incompatible.

SAP Error Message - Details

• Message type: E = Error

• Message class: APS_CCV_CHECK - Custom CDS View check messages

• Message number: 104

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

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message APS_CCV_CHECK104 - Adding the key field &1 is incompatible. ?

  The SAP error message APS_CCV_CHECK104, which states "Adding 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 usually arises when there is an attempt to add a key field to a data model or InfoObject that is not compatible with the existing structure. The incompatibility can stem from several factors, including:
  
  Data Model Structure: The key field being added may conflict with existing key fields or the overall structure of the data model.
  Data Type Mismatch: The data type of the new key field may not match the expected data type of the existing key fields.
  Key Field Limitations: There may be restrictions on the number of key fields allowed in a particular data model or InfoObject.
  Existing Data: If there is already existing data in the model, adding a new key field may not be feasible without proper adjustments.
  
  Solution:
  To resolve the APS_CCV_CHECK104 error, consider the following steps:
  
  
  Review Key Fields: Check the existing key fields in the data model or InfoObject. Ensure that the new key field you are trying to add does not conflict with these existing fields.
  
  
  Check Data Types: Verify that the data type of the new key field matches the expected data type for key fields in the model.
  
  
  Limitations on Key Fields: Consult the documentation or system settings to understand any limitations on the number of key fields that can be defined. If the limit has been reached, you may need to remove an existing key field before adding a new one.
  
  
  Adjust Data Model: If the data model already contains data, consider whether you need to adjust the model or create a new one to accommodate the new key field.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on modifying key fields in your version of SAP.
  
  
  Testing: After making changes, test the data model to ensure that it functions correctly with the new key field.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  System Logs: Review system logs for additional error messages or warnings that may provide more context about the issue.
  
  If the problem persists after following these steps, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.