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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message CDS_UNIT_MESSAGE007 - DDL source not available for CDS entity '&1' ?

  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 by the CDS entity exists in the database. You can do this by checking in the ABAP Dictionary (transaction SE11).
  Review Transport Requests: If the CDS entity was transported, ensure that all related objects were included in the transport request and successfully imported into the target system.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the underlying database objects. This can be checked in transaction SU53 or by consulting with your security team.
  Correct the Definition: Review the definition of the CDS entity in the ABAP Development Tools (ADT) or transaction SE11 to ensure that it correctly references existing database objects.
  Namespace Verification: Ensure that the namespaces of the CDS entity and the underlying objects are correctly aligned. If they are in different namespaces, you may need to adjust the references accordingly.
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how CDS views work and their dependencies is crucial for troubleshooting.
  ABAP Development Tools (ADT): Using ADT can help you manage and develop CDS views more effectively, providing better visibility into the definitions and dependencies.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to CDS entities and their underlying objects.
  Documentation: Refer to the official SAP documentation for Core Data Services for more detailed information on how to define and manage CDS entities.
  
  If the issue persists after checking these aspects, consider reaching out to SAP support for further assistance.