How To Fix DDLS163 - Base object & is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 163

• Message text: Base object & is not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS163 - Base object & is not unique ?

  The SAP error message DDLS163 indicates that there is a problem with the uniqueness of a base object in the Data Dictionary. This typically occurs when you are trying to create or modify a database object (like a table, view, or data element) and the system finds that the name you are using is not unique within the relevant namespace.
  Cause:
  
  Duplicate Object Names: The most common cause of this error is that there is already an object (like a table, view, or data element) with the same name in the same namespace (e.g., in the same package or schema).
  Transport Issues: Sometimes, if you are working in a transport environment, objects may exist in different systems (development, quality assurance, production) that have not been properly synchronized.
  Namespace Conflicts: If you are using a custom namespace, there may be conflicts with standard SAP objects or other custom objects.
  
  Solution:
  
  Check for Existing Objects: Use transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to search for existing objects with the same name. If you find a duplicate, you will need to rename your object to ensure uniqueness.
  Rename the Object: If you are creating a new object, consider using a different name that does not conflict with existing objects.
  Review Transport Requests: If you suspect that the issue is related to transport requests, check the transport logs and ensure that all relevant objects have been transported correctly.
  Namespace Management: If you are working in a custom namespace, ensure that you are following the naming conventions and that your object names are unique within that namespace.
  Check for Active Objects: Sometimes, an object may be active in the system but not visible in the development environment. Use transaction SE03 (Transport Organizer Tools) to check for active objects.
  
  Related Information:
  
  Transaction Codes: SE11 (Data Dictionary), SE80 (Object Navigator), SE03 (Transport Organizer Tools).
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to this error message.
  Documentation: Review SAP documentation on Data Dictionary objects and naming conventions to ensure compliance with best practices.
  
  By following these steps, you should be able to resolve the DDLS163 error and ensure that your database objects are unique within the SAP system.