3798433 - CAP CDS Upgrade – "Primary Key Is Not Defined" / "Expected Entity to Have a Primary Key" Error During MTAR Deployment

• After upgrading the @sap/cds version, deploying an MTAR fails with an error such as:
  • "primary key is not defined"
  • "Expected entity to have a primary key"
• Attempting to define a key from existing fields results in duplicate data entry or cannot be null errors
• Using cuid() as a generated key results in empty/null field cannot be a primary key errors

• SAP BTP Cloud Foundry
• SAP CAP (Node.js or Java)

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