How To Fix CFD_REPOSITORY_UTIL005 - Custom Field &1 is not valid. Name must start with a letter.

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REPOSITORY_UTIL - Custom Fields: Repository

• Message number: 005

• Message text: Custom Field &1 is not valid. Name must start with a letter.

What causes this issue?

Value &V1& of property <ZK>CustomFieldID</> in entity se<ZK>t
CustomFields </>must start with a letter.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Change value of property <ZK>CustomFieldID </>in entity set
<ZK>CustomFields</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REPOSITORY_UTIL005 - Custom Field &1 is not valid. Name must start with a letter. ?

  The SAP error message CFD_REPOSITORY_UTIL005 indicates that a custom field name you are trying to create or use does not meet the naming conventions required by SAP. Specifically, the error states that the custom field name must start with a letter.
  Cause:
  
  Invalid Naming Convention: In SAP, custom field names must adhere to specific naming conventions. They must start with a letter (A-Z) and can be followed by letters, numbers (0-9), or underscores (_). If the name starts with a number or special character, this error will occur.
  Field Name Length: Ensure that the field name does not exceed the maximum length allowed by SAP for custom fields.
  Reserved Names: The name might be conflicting with reserved names or existing fields in the system.
  
  Solution:
  
  Rename the Custom Field: Change the name of the custom field to ensure it starts with a letter. For example, if your custom field is named "1CustomField", rename it to "CustomField1".
  Check Naming Conventions: Ensure that the new name adheres to SAP's naming conventions:
  
  Must start with a letter (A-Z).
  Can contain letters, numbers, and underscores.
  Should not exceed the maximum length (usually 30 characters).
  
  
  Avoid Reserved Names: Make sure the name does not conflict with any existing fields or reserved names in the SAP system.
  
  Related Information:
  
  SAP Documentation: Refer to the SAP Help Portal or the specific documentation for the version of SAP you are using for detailed guidelines on naming conventions for custom fields.
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) or SE80 (Object Navigator) to check existing field names and ensure your custom field name is unique.
  Custom Fields and Logic: If you are using the Custom Fields and Logic app, ensure that you are following the guidelines provided in the app for creating custom fields.
  
  By following these steps, you should be able to resolve the CFD_REPOSITORY_UTIL005 error and successfully create or modify your custom field in SAP.