How To Fix D0763 - Namespace &* is already reserved for a table type

SAP Error Message - Details

• Message type: E = Error

• Message class: D0 - Machine-level ABAP/4 Dictionary texts (e.g. debugging)

• Message number: 763

• Message text: Namespace &* is already reserved for a table type

What causes this issue?

You tried to create an object for which further objects are generated
during activation. These generated objects could be given the same name
as an existing table type due to the naming conventions.
To avoid this from happening, you may not create the object.

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?

Choose another name.

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 D0763 - Namespace &* is already reserved for a table type ?

  The SAP error message D0763 indicates that a namespace you are trying to use for a table type is already reserved. In SAP, namespaces are used to avoid naming conflicts between different objects, especially when multiple developers or teams are working on the same system.
  Cause:
  The error occurs when you attempt to create a new table type in a namespace that is already reserved for another object (like a table type, structure, or other data dictionary objects). This can happen if:
  
  You are trying to create a table type with a name that is already in use.
  You are using a reserved namespace that is not available for your development.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Objects: 
  
  Use transaction SE11 (Data Dictionary) to check if a table type with the same name already exists. If it does, you will need to choose a different name for your new table type.
  
  
  
  Use a Different Namespace:
  
  If you are working in a custom namespace, ensure that you are using a valid and available namespace. You can check the available namespaces in your system and select one that is not reserved.
  
  
  
  Naming Conventions:
  
  Follow the naming conventions for your organization or project. This often includes prefixes or suffixes that help identify the object type and its purpose.
  
  
  
  Consult Documentation:
  
  If you are unsure about the namespaces and their usage, consult your project documentation or reach out to your SAP Basis team for guidance.
  
  
  
  Transport Requests:
  
  If the object you are trying to create is part of a transport request, ensure that the transport request is correctly configured and that you have the necessary authorizations to create objects in the specified namespace.
  
  
  
  Related Information:
  
  Namespaces: In SAP, namespaces are typically defined for different development teams or projects to avoid conflicts. Custom namespaces usually start with a specific prefix (like Z or Y) followed by a unique identifier.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SE37 (Function Builder) to manage and view objects in the system.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to namespace management and object creation.
  
  By following these steps, you should be able to resolve the D0763 error and successfully create your table type in SAP.