How To Fix FDT_CORE216 - Invalid name (&1); use namespace correctly "/.../..."

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 216

• Message text: Invalid name (&1); use namespace correctly "/.../..."

What causes this issue?

You have tried to create an object with the name &v1&. However, the use
of the slash character ("/") in this name does not comply with the
naming conventions for BRFplus objects.
The slash character is only permitted as a part of an object's name to
separate the name of the object itself from a namespace prefix preceding
the object's name. If you want to use namespaces in an object name, the
following rules apply:
The first character of the name must be a slash (indicating that a
namespace is being used).
There must be at least one more slash as part of the name string
(indicating either the end of the namespace or of a particular level in
case of a multi-level namespace).
An empty string is not permitted as a namespace ("//").
The last slash in the object name must be followed by at least one more
character (indicating the name of the object itself, without the
namespace).

System Response

The object cannot be created.

How to fix this error?

Change the object name according to the rules outlined above.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_CORE216 - Invalid name (&1); use namespace correctly "/.../..." ?

  The SAP error message FDT_CORE216 indicates that there is an issue with the naming convention used in your SAP system, specifically related to the use of namespaces. This error typically arises when you are trying to create or reference an object (like a field, data element, or structure) that does not conform to the required naming standards.
  
  Cause:
  
  Invalid Namespace: The name you are trying to use does not follow the correct namespace format. In SAP, namespaces are used to avoid naming conflicts between different development objects. A valid namespace usually starts with a specific prefix (like /Z or /Y) followed by the object name.
  Incorrect Naming Convention: The name may contain invalid characters or may not adhere to the length restrictions imposed by SAP.
  Missing Namespace: If you are trying to create an object in a custom namespace but have not specified it correctly, this error can occur.
  
  
  Solution:
  
  Check Naming Convention: Ensure that the