How To Fix FDT_CORE004 - Name &1 contains a forbidden character

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_CORE - Formula & Derivation Tool: Core

• Message number: 004

• Message text: Name &1 contains a forbidden character

What causes this issue?

The name &V1& contains a character that is not allowed. The characters
allowed are letters, numbers, and the underscore "_". If you are
grouping your objects with the help of namespaces, the namespace
delimiter character "/" is allowed, too.
The name must begin with a letter, or, in case of a namespace, with a
slash.

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 the name according to the rules mentioned above.

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 FDT_CORE004 - Name &1 contains a forbidden character ?

  The SAP error message FDT_CORE004 indicates that a name you are trying to use contains a forbidden character. This error typically occurs in the context of SAP Fiori or SAP UI5 applications, particularly when dealing with field names, variable names, or other identifiers that have specific naming conventions.
  Cause:
  The error is triggered when the name you are trying to use includes characters that are not allowed according to SAP's naming conventions. Forbidden characters can include:
  
  Special characters (e.g., @, #, $, %, &, etc.)
  Spaces
  Certain punctuation marks
  Names that start with a number
  
  Solution:
  To resolve this error, you should:
  
  Identify the Name: Check the name that is causing the error (indicated by &1 in the error message).
  Review Naming Conventions: Ensure that the name adheres to SAP's naming conventions. Generally, valid names should:
  
  Start with a letter (A-Z or a-z).
  Contain only letters, numbers (0-9), and underscores (_).
  Avoid special characters and spaces.
  
  
  Modify the Name: Change the name to remove any forbidden characters. For example:
  
  Replace spaces with underscores.
  Remove special characters.
  Ensure the name starts with a letter.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for naming conventions specific to the context you are working in (e.g., ABAP, Fiori, UI5).
  SAP Community: Check forums and community discussions for similar issues and solutions shared by other users.
  Testing: After making changes, test the application or process again to ensure that the error is resolved.
  
  By following these steps, you should be able to resolve the FDT_CORE004 error and successfully use the desired name in your SAP application.