How To Fix CFD_REPOSITORY_UTIL109 - Custom Field &1: Name &1 contains invalid prefix.

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REPOSITORY_UTIL - Custom Fields: Repository

• Message number: 109

• Message text: Custom Field &1: Name &1 contains invalid prefix.

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 CFD_REPOSITORY_UTIL109 - Custom Field &1: Name &1 contains invalid prefix. ?

  The SAP error message CFD_REPOSITORY_UTIL109 indicates that there is an issue with the naming convention of a custom field in the SAP system. Specifically, the error states that the name of the custom field contains an invalid prefix. This typically occurs when the custom field name does not adhere to the naming standards set by SAP.
  Cause:
  
  Invalid Prefix: The custom field name may start with a prefix that is not allowed. SAP has specific naming conventions for custom fields, and certain prefixes are reserved or not permitted.
  Naming Standards: Custom fields usually need to follow specific patterns, such as starting with a certain character or set of characters (e.g., Z or Y for custom objects).
  Field Length: The name might exceed the maximum length allowed for custom fields.
  
  Solution:
  
  Check Naming Convention: Review the naming conventions for custom fields in your SAP system. Ensure that the custom field name starts with an appropriate prefix (usually Z or Y).
  Rename the Field: If the prefix is invalid, rename the custom field to comply with the naming standards. You can do this in the Custom Fields and Logic app or the relevant configuration area.
  Field Length: Ensure that the name does not exceed the maximum length allowed for custom fields (typically 30 characters).
  Consult Documentation: Refer to SAP documentation or guidelines regarding custom field creation to ensure compliance with all naming rules.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might provide additional context or updates regarding custom field naming conventions.
  Custom Fields and Logic: Familiarize yourself with the Custom Fields and Logic app in SAP, which allows you to create and manage custom fields effectively.
  SAP Community: Engage with the SAP Community forums for insights and experiences from other users who may have encountered similar issues.
  
  By following these steps, you should be able to resolve the CFD_REPOSITORY_UTIL109 error and successfully create or modify your custom field.