How To Fix SADL_GW_DT_CDS019 - The composition does not use consistent primary keys.

SADL_GW_DT_CDS019 - Overview

• Message type: E = Error

• Message class: SADL_GW_DT_CDS - Messages CDS Checks

• Message number: 019

• Message text: The composition does not use consistent primary keys.

What causes this issue?

Some CDS views of the composition use UUID-based keys, while other CDS
views of the composition use semantic keys.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Use one key type consistently in your composition.

Procedure for System Administrators

Contact the corresponding developer of the CDS view to correct the
error.

Error message extract from SAP system. Copyright SAP SE.

SADL_GW_DT_CDS019 - Details

• The SAP error message SADL_GW_DT_CDS019 indicates that there is an inconsistency in the primary keys used in a Core Data Services (CDS) view or a composition. This error typically arises when the primary keys defined in the underlying data sources do not match or are not consistent across the entities involved in the composition.
  
  Cause:
  
  
  Inconsistent Primary Keys: The primary keys defined in the different entities or tables that are being composed do not align. For example, if you are trying to join two tables, and one table has a primary key defined as ID while the other has it defined as ID_NO, this inconsistency will trigger the error.
  
  
  Missing Primary Key: One of the entities in the composition may not have a primary key defined, which is required for the composition to work correctly.
  
  
  Incorrect Associations: The associations defined in the CDS view may not correctly reflect the relationships between the entities, leading