How To Fix TG646 - Table & already exists on the database

SAP Error Message - Details

• Message type: E = Error

• Message class: TG - Messages for Upgrade Repository Switch

• Message number: 646

• Message text: Table & already exists on the database

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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Smart SAP Assistant

• What is the cause and solution for SAP error message TG646 - Table & already exists on the database ?

  The SAP error message TG646 indicates that a table you are trying to create or modify already exists in the database. This can occur during various operations, such as when you are trying to create a new table, execute a data dictionary (DDIC) object, or during a transport of objects.
  Cause:
  
  Table Already Exists: The most straightforward cause is that the table you are trying to create or modify already exists in the database.
  Transport Issues: If you are transporting objects from one system to another, the table might already be present in the target system.
  Development Environment: In a development environment, multiple developers might be trying to create the same table simultaneously.
  Database Synchronization: If there are issues with database synchronization or if the database was not properly updated, it might lead to this error.
  
  Solution:
  
  
  Check for Existing Table: 
  
  Use transaction code SE11 (Data Dictionary) to check if the table already exists. If it does, you may need to modify it instead of creating a new one.
  
  
  
  Delete or Rename: 
  
  If the existing table is not needed, you can delete it (if you have the necessary permissions) or rename it if you want to keep the data.
  
  
  
  Modify the Existing Table: 
  
  If you need to add fields or make changes, consider modifying the existing table instead of creating a new one.
  
  
  
  Transport Management: 
  
  If this error occurs during a transport, ensure that the transport request is correctly configured and that the target system does not already have the table.
  
  
  
  Check for Naming Conflicts: 
  
  Ensure that there are no naming conflicts with other database objects. Sometimes, similar names can lead to confusion.
  
  
  
  Database Administration: 
  
  If you are unsure about the state of the database or if you suspect corruption, consult your database administrator for assistance.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  SE11: Data Dictionary
  SE14: Database Utility (for checking and managing database objects)
  
  
  
  SAP Notes: 
  
  Check SAP Notes for any known issues or patches related to this error message. You can search for relevant notes in the SAP Support Portal.
  
  
  
  Documentation: 
  
  Review SAP documentation regarding database management and data dictionary operations for best practices.
  
  
  
  Backup: 
  
  Always ensure that you have a backup of your data before making changes to the database schema.
  
  
  
  By following these steps, you should be able to resolve the TG646 error and proceed with your development or transport activities in SAP.