How To Fix 2Q030 - Domain link cannot have a controller with the same name

SAP Error Message - Details

• Message type: E = Error

• Message class: 2Q - TMS Service Message Class

• Message number: 030

• Message text: Domain link cannot have a controller with the same name

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message 2Q030 - Domain link cannot have a controller with the same name ?

  The SAP error message 2Q030 indicates that there is a conflict in the naming of a controller within a domain link. This typically occurs in the context of SAP's data modeling or configuration, particularly when working with domain links in the context of SAP BW (Business Warehouse) or SAP HANA.
  Cause:
  The error arises when you attempt to create or modify a domain link that references a controller (such as a data source or a transformation) that has the same name as the domain link itself. In SAP, each object must have a unique identifier, and having two objects with the same name can lead to confusion and conflicts in processing.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Naming Conventions: Review the names of the controllers and domain links you are working with. Ensure that no two objects share the same name.
  
  
  Rename the Controller or Domain Link: If you find that the controller and the domain link have the same name, you will need to rename one of them. Choose a unique name that adheres to your organization's naming conventions.
  
  
  Update References: If you rename a controller or domain link, make sure to update any references to that object in your data models or configurations to avoid further issues.
  
  
  Test Changes: After making the necessary changes, test the domain link to ensure that it functions correctly without generating the error.
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for guidelines on naming conventions and best practices for data modeling.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and to share solutions.
  Transaction Codes: Familiarize yourself with relevant transaction codes (like RSA1 for Data Warehousing Workbench) that may help you navigate and manage your data models effectively.
  
  By following these steps, you should be able to resolve the error message 2Q030 and ensure that your domain links and controllers are correctly configured.