How To Fix WUSL303 - &1 falls within the SAP join definitions namespace. Creation not possible

WUSL303 - Overview

• Message type: E = Error

• Message class: WUSL - Messages for where-used list

• Message number: 303

• Message text: &1 falls within the SAP join definitions namespace. Creation not possible

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.

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WUSL303 - Details

• The SAP error message WUSL303 indicates that a specific object (like a join definition) you are trying to create or modify falls within a namespace that is reserved for SAP standard objects. This means that the system is preventing you from creating or modifying an object in that namespace to avoid conflicts with standard SAP functionality.
  
  Cause:
  
  Namespace Conflict: The object you are trying to create or modify is in a namespace that is reserved for SAP standard objects. This is typically the case when you are working with joins in the SAP Business Warehouse (BW) or SAP HANA environments.
  System Restrictions: SAP has certain restrictions in place to maintain the integrity of its standard objects and to prevent custom developments from interfering with standard functionality.
  
  
  Solution:
  
  Use a Custom Namespace: If you need to create a join definition, ensure that you are using a custom namespace. Custom namespaces typically start with a specific prefix