How To Fix FDT_CORE255 - Applications at SAP must not be created in customer namespace

FDT_CORE255 - Overview

• Message type: E = Error

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

• Message number: 255

• Message text: Applications at SAP must not be created in customer namespace

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 FDT_CORE255 - Applications at SAP must not be created in customer namespace ?

  The SAP error message FDT_CORE255 indicates that applications in the SAP system should not be created in the customer namespace. This is a restriction imposed by SAP to ensure that standard applications and functionalities remain intact and are not overridden or modified in a way that could lead to inconsistencies or issues during upgrades or support.
  
  Cause:
  The error typically arises when a user attempts to create or modify an application in a customer namespace (usually starting with "Z" or "Y"). SAP reserves certain namespaces for its own development and applications, and creating custom applications in these areas can lead to conflicts with standard SAP applications.
  
  Solution:
  To resolve this error, you should follow these steps:
  
  
  Use the Correct Namespace: Ensure that you are creating your applications in the appropriate customer namespace. Custom developments should be done in namespaces that are designated for customer use (usually starting with "Z" or "Y").
  
  
  Check Application Type: If you