How To Fix ACM_UI123 - No DDL source name can be determined for CDS entity: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: ACM_UI - Message-Class for all ACM-UIs

• Message number: 123

• Message text: No DDL source name can be determined for CDS entity: &1

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message ACM_UI123 - No DDL source name can be determined for CDS entity: &1 ?

  The SAP error message ACM_UI123, which states "No DDL source name can be determined for CDS entity: &1," typically occurs in the context of Core Data Services (CDS) views in SAP systems. This error indicates that the system is unable to find the Data Definition Language (DDL) source for the specified CDS entity.
  Cause:
  
  Missing DDL Source: The CDS entity may not have a corresponding DDL source defined in the system. This can happen if the entity was not properly activated or if there are issues with the underlying database objects.
  Transport Issues: If the CDS view was transported from one system to another, there may be inconsistencies or missing dependencies in the target system.
  Authorization Issues: The user may not have the necessary authorizations to access the DDL source or the CDS entity.
  Incorrect Naming: The entity name specified in the error message may be incorrect or misspelled, leading to the system being unable to locate it.
  
  Solution:
  
  Check Activation: Ensure that the CDS entity is activated. You can do this by navigating to the CDS view in the ABAP Development Tools (ADT) or SE11 transaction and checking its activation status.
  Review Dependencies: Check if all dependent objects (like tables, views, etc.) are available and activated in the system. If any dependencies are missing, you may need to create or activate them.
  Transport Consistency: If the issue arose after a transport, verify that all related objects were transported correctly. You may need to re-transport the missing objects.
  Check Authorizations: Ensure that the user has the necessary authorizations to access the CDS entity and its underlying data sources.
  Correct Naming: Double-check the name of the CDS entity in the error message. Ensure that it matches the actual name in the system.
  Debugging: If the issue persists, consider debugging the CDS view to identify where the failure occurs. This may provide more insight into the underlying problem.
  
  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): Use ADT for a more user-friendly interface to manage and develop CDS views.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Refer to the official SAP documentation for CDS views to understand their structure, activation, and dependencies better.
  
  If the problem persists after trying the above solutions, consider reaching out to SAP support for further assistance.