How To Fix CZ178 - Table & is already defined as an SAP standard object

SAP Error Message - Details

• Message type: E = Error

• Message class: CZ - Customizing messages

• Message number: 178

• Message text: Table & is already defined as an SAP standard object

What causes this issue?

You want to include table &V1& as a new entry. However, table &V1& is
already present in the system as an SAP standard 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?

Please enter the name of another table.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CZ178 - Table & is already defined as an SAP standard object ?

  The SAP error message CZ178 indicates that the table you are trying to create or modify is already defined as an SAP standard object. This typically occurs when you attempt to create a database table in the ABAP Dictionary (SE11) that has the same name as an existing SAP standard table.
  Cause:
  
  Name Conflict: The table name you are trying to use is already taken by an SAP standard table. SAP has a naming convention where standard objects usually start with specific prefixes (like "T", "Z", or "Y" for custom objects).
  Namespace Violation: If you are trying to create a custom table in a namespace that is reserved for SAP standard objects, you will encounter this error.
  
  Solution:
  
  Use a Different Name: The simplest solution is to choose a different name for your custom table. Ensure that the name starts with "Z" or "Y" to avoid conflicts with SAP standard objects.
  Check Existing Tables: Before creating a new table, check the existing tables in the system to ensure that the name you want to use is not already taken. You can do this by using transaction SE11 and searching for the table name.
  Namespace Management: If you are working in a development environment, ensure that you are using the correct namespace for your custom developments. Custom objects should typically be created in a namespace that is designated for your organization.
  
  Related Information:
  
  Transaction SE11: This is the ABAP Dictionary transaction where you can create and manage database tables, views, data elements, domains, etc.
  SAP Naming Conventions: Familiarize yourself with SAP's naming conventions for objects to avoid conflicts. Custom objects should generally start with "Z" or "Y".
  SAP Notes: If you believe there is an issue beyond a naming conflict, you can check SAP Notes for any related issues or updates regarding the specific table or error message.
  
  By following these guidelines, you should be able to resolve the CZ178 error and successfully create your custom table in SAP.