How To Fix DDLS123 - Alias & for & has the same name as another base object

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 123

• Message text: Alias & for & has the same name as another base object

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS123 - Alias & for & has the same name as another base object ?

  The SAP error message DDLS123 indicates that there is a naming conflict in the database dictionary. Specifically, it means that an alias you are trying to create or modify has the same name as another base object (like a table, view, or another alias) in the same schema. This can occur when you are working with database objects in the ABAP Dictionary (transaction SE11) or when executing Data Definition Language (DDL) statements.
  Cause:
  
  Naming Conflict: The alias you are trying to create already exists with the same name as another object in the database.
  Schema Issues: The alias might be defined in a different schema, but the system is treating it as a conflict due to the same name.
  Object Type Confusion: The system may be confused about the type of object (alias vs. base object) due to naming conventions.
  
  Solution:
  
  Rename the Alias: Choose a different name for the alias that does not conflict with existing base objects or aliases.
  Check Existing Objects: Use transaction SE11 or SE14 to check for existing objects with the same name. You can also use SQL queries to check the database directly.
  Delete or Modify Existing Object: If the existing object is no longer needed, consider deleting it or renaming it to free up the name for your new alias.
  Use Schema Prefixes: If applicable, use schema prefixes to differentiate between objects in different schemas.
  
  Related Information:
  
  Transaction Codes: 
  
  SE11: Data Dictionary (to view and manage database objects).
  SE14: Database Utility (to manage database objects).
  
  
  Naming Conventions: Follow consistent naming conventions to avoid conflicts in the future.
  Documentation: Refer to SAP Help documentation for more details on database object management and naming conventions.
  Database Administration: If you are unsure about the implications of deleting or renaming objects, consult with your database administrator or SAP Basis team.
  
  By addressing the naming conflict and ensuring that your alias has a unique name, you should be able to resolve the DDLS123 error.