How To Fix DHCDC_CORE048 - Key field &2 of object &1 cannot be used for a projection

SAP Error Message - Details

• Message type: E = Error

• Message class: DHCDC_CORE -

• Message number: 048

• Message text: Key field &2 of object &1 cannot be used for a projection

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 DHCDC_CORE048 - Key field &2 of object &1 cannot be used for a projection ?

  The SAP error message DHCDC_CORE048 indicates that a key field of a specific object cannot be used for a projection. This typically occurs in the context of data modeling or data extraction processes, particularly when working with SAP Data Hub or SAP BW (Business Warehouse).
  
  Cause:
  The error is usually caused by one of the following reasons:
  
  
  Key Field Definition: The field you are trying to use as a key in a projection is not defined as a key field in the underlying data model or object. In SAP, key fields must be uniquely identifiable and defined as such in the data structure.
  
  
  Data Model Constraints: The object you are working with may have constraints that prevent certain fields from being used in projections. This can happen if the field is not part of the primary key or if it is not suitable for the projection context.
  
  
  Incompatibility with Projection Logic: The projection logic may