How To Fix CDS_UNIT_MESSAGE007 - DDL source not available for CDS entity '&1'

CDS_UNIT_MESSAGE007 - Overview

• Message type: E = Error

• Message class: CDS_UNIT_MESSAGE - Message Class

• Message number: 007

• Message text: DDL source not available for CDS entity '&1'

What causes this issue?

DDL Source not available for entity '<(>&<)>1'. Possible reasons could
be CDS may have Table Functions or External Views as dependencies which
are only supported in HANA systems.

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

CDS_UNIT_MESSAGE007 - Details

• The SAP error message CDS_UNIT_MESSAGE007 indicates that the Data Definition Language (DDL) source for a Core Data Services (CDS) entity is not available. This typically occurs when the system cannot find the underlying database table or view that the CDS entity is supposed to reference.
  Causes:
  
  Missing Database Object: The underlying database table or view that the CDS entity references may not exist or may have been deleted.
  Transport Issues: If the CDS entity was transported from one system to another, the underlying objects may not have been transported correctly.
  Authorization Issues: The user may not have the necessary authorizations to access the underlying database objects.
  Incorrect Definition: The CDS entity may be incorrectly defined, pointing to a non-existent or incorrectly named database object.
  Namespace Issues: The CDS entity might be in a different namespace than the underlying database object, leading to resolution issues.
  
  Solutions:
  
  Check Existence of Underlying Objects: Verify that the database table or view referenced