How To Fix MC665 - Table & already exists; choose another name

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 665

• Message text: Table & already exists; choose another name

What causes this issue?

A table with this name already exists in the ABAP/4 Dictionary.

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 for your object.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MC665 - Table & already exists; choose another name ?

  The SAP error message MC665 indicates that there is an attempt to create a table that already exists in the system. This typically occurs in the context of data modeling or when trying to create a new table in the database that has the same name as an existing one.
  Cause:
  
  Duplicate Table Name: The most common cause is that the table name you are trying to create is already in use by another table in the database.
  Development Environment: If you are working in a development environment, it is possible that the table was created in a previous session or by another developer.
  Transport Issues: If you are transporting objects between systems (e.g., from development to quality assurance), there may be conflicts with existing objects.
  
  Solution:
  
  Choose a Different Name: The simplest solution is to choose a different name for the new table that does not conflict with existing tables.
  Check Existing Tables: Use transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility) to check if the table already exists. If it does, you can either modify the existing table or drop it if it is no longer needed (ensure you have the necessary authorizations and that it is safe to do so).
  Review Transport Requests: If you suspect that the issue is related to transport requests, check the transport logs to see if the table was included in a previous transport.
  Namespace Consideration: If you are working in a namespace, ensure that the table name adheres to the naming conventions and does not conflict with standard SAP objects.
  
  Related Information:
  
  Transaction Codes: 
  
  SE11: Data Dictionary to view and manage database tables.
  SE14: Database Utility for managing database objects.
  
  
  Naming Conventions: Familiarize yourself with SAP's naming conventions for database objects to avoid conflicts.
  Development Guidelines: Follow best practices for development in SAP to minimize the risk of naming conflicts, such as using unique prefixes for custom objects.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP Basis or development team for further assistance.