How To Fix TK278 - Table key (class &3) is in the customer namespace

TK278 - Overview

• Message type: E = Error

• Message class: TK - Transport Organizer

• Message number: 278

• Message text: Table key (class &3) is in the customer namespace

What causes this issue?

Key &V2& of table &V1& (delivery class &V3&) is in the customer
namespace (see table TRESC).

System Response

You cannot include the key in the requests.

How to fix this error?

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.

TK278 - Details

• The SAP error message TK278 indicates that there is an issue with a table key that is located in the customer namespace. This typically occurs when you are trying to create or modify a table key in a way that conflicts with the naming conventions or restrictions of the SAP system.
  
  Cause:
  
  Customer Namespace Conflict: The error arises when you attempt to use a table key that is defined in the customer namespace (usually starting with "Z" or "Y") in a way that is not allowed by the system.
  Incorrect Table Key Definition: The table key may not be defined correctly, or it may be trying to reference a key that is not valid or does not exist.
  Modification of Standard Objects: If you are trying to modify a standard SAP object or table key that is not meant to be changed, this error can occur.
  
  
  Solution:
  
  Check Table Key Definition: Review the definition of the