How To Fix CM_CFD_DE_MD_COMMON011 - Extension name "&1" is not unique.

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_CFD_DE_MD_COMMON - DataSourceExtension: Message class for metadata down-/Upload

• Message number: 011

• Message text: Extension name "&1" is not unique.

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CM_CFD_DE_MD_COMMON011 - Extension name "&1" is not unique. ?

  The SAP error message CM_CFD_DE_MD_COMMON011 indicates that there is a problem with the uniqueness of an extension name in the context of the SAP system. This error typically arises when you are trying to create or modify an extension (such as a custom field or a custom object) and the name you have chosen is already in use by another extension.
  Cause:
  
  Duplicate Extension Name: The most common cause of this error is that the extension name you are trying to use is already assigned to another extension in the system.
  Namespace Conflicts: If you are working in a multi-tenant environment or with multiple development teams, there may be conflicts in naming conventions.
  Incorrect Configuration: Sometimes, the configuration settings may not be correctly set, leading to this error.
  
  Solution:
  
  
  Check Existing Extensions: 
  
  Go to the relevant transaction or application where you can view existing extensions (e.g., Custom Fields and Logic).
  Search for the extension name you are trying to use to see if it already exists.
  
  
  
  Rename the Extension: 
  
  If you find that the extension name is already in use, consider renaming your extension to something unique.
  Ensure that the new name follows any naming conventions established in your organization.
  
  
  
  Use a Namespace: 
  
  If applicable, use a namespace prefix for your extension names to avoid conflicts with other extensions.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or guidelines regarding naming conventions for extensions to ensure compliance.
  
  
  
  Check for Transport Issues: 
  
  If you are working in a development environment and transporting changes, ensure that there are no transport issues that might be causing the duplication.
  
  
  
  Contact SAP Support: 
  
  If you are unable to resolve the issue, consider reaching out to SAP support for assistance.
  
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional context.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered and resolved similar issues.
  Documentation: Review the official SAP Help documentation for the specific module or functionality you are working with to understand the requirements for naming extensions.
  
  By following these steps, you should be able to resolve the error and successfully create or modify your extension in SAP.