How To Fix FDT_HRF125 - CDS document &1 does not contain any key fields

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_HRF - FDT: HRF

• Message number: 125

• Message text: CDS document &1 does not contain any key fields

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_HRF125 - CDS document &1 does not contain any key fields ?

  The SAP error message FDT_HRF125 indicates that a Core Data Services (CDS) document does not contain any key fields. This error typically arises when you are trying to create or use a CDS view that is expected to have key fields defined, but none are present.
  Cause:
  
  Missing Key Fields: The CDS view you are working with does not have any fields defined as key fields. Key fields are essential for uniquely identifying records in a database table or view.
  Incorrect CDS Definition: The CDS view might be incorrectly defined, leading to the absence of key fields.
  Data Model Issues: The underlying data model may not have been designed to include key fields, or the fields that should be keys are not marked as such.
  
  Solution:
  
  Define Key Fields: 
  
  Open the CDS view definition in the ABAP Development Tools (ADT) or the relevant transaction.
  Ensure that at least one field is marked as a key field. This can be done by using the @Key annotation in the CDS view definition.
  Example:
  define view my_cds_view
  as select from my_table
  {
    key field1,
    field2,
    field3
  }
  
  
  
  Check Data Model: Review the underlying data model to ensure that it supports the necessary key fields. If the data model is incorrect, you may need to adjust it accordingly.
  Re-activate the CDS View: After making changes to the key fields, make sure to activate the CDS view again to apply the changes.
  Testing: After defining the key fields, test the CDS view to ensure that it works as expected without generating the error.
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a way to define semantic data models in SAP. They allow for the creation of views on database tables with a focus on business semantics.
  Key Fields: Key fields are essential in database design as they uniquely identify records. In CDS views, they are defined using the @Key annotation.
  SAP Documentation: For more detailed information, refer to the official SAP documentation on CDS views and annotations.
  
  If you continue to experience issues after following these steps, consider checking for any additional constraints or dependencies in your SAP environment that may affect the CDS view.