How To Fix DDLS162 - Base object & with alias & is not unique

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 162

• Message text: Base object & with alias & is not unique

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DDLS162 - Base object & with alias & is not unique ?

  The SAP error message DDLS162 indicates that there is a problem with the uniqueness of a base object and its alias in the context of database table definitions or data dictionary objects. This error typically arises when there are multiple definitions or references to the same object, which can lead to ambiguity in the system.
  Cause:
  
  Duplicate Definitions: The error usually occurs when there are multiple definitions of the same base object (like a table or view) with different aliases in the same context, leading to confusion about which object should be referenced.
  Incorrect Aliasing: If you are trying to create or modify a database object and you have used an alias that already exists for another object, this can trigger the error.
  Inconsistent Naming: Sometimes, inconsistencies in naming conventions or changes in the data dictionary can lead to this error.
  
  Solution:
  
  Check for Duplicates: Review the data dictionary objects to ensure that there are no duplicate definitions for the base object and its alias. You can use transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to inspect the definitions.
  Modify Aliases: If you find that the alias you are trying to use is already taken, consider renaming it to something unique.
  Clear Cache: Sometimes, clearing the cache can help resolve issues related to outdated definitions. You can do this using transaction code SE14 (Database Utility) to activate or adjust the database objects.
  Check Dependencies: Ensure that there are no dependencies or references that might be causing the conflict. You can use transaction SE11 to check the dependencies of the objects involved.
  Transport Requests: If the issue arises after a transport, ensure that the transport request does not contain conflicting definitions.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE14 (Database Utility) for managing and inspecting database objects.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP Notes can provide additional context or solutions specific to your version of SAP.
  Documentation: Review SAP documentation on data dictionary objects and naming conventions to ensure compliance with best practices.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP Basis or development team for further assistance, as they may have more insights into the specific configurations and customizations in your SAP environment.