How To Fix AD630 - Changing table type? Delete database table first

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 630

• Message text: Changing table type? Delete database table first

What causes this issue?

Table type TRANSP was changed to a type which does not itself have a
direct representation on the database. This could be a table of type
cluster, pool or a structure.
There is already a database table for the transparent table. It is only
possible to activate the table when the database table has been
deleted.

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?

Delete the database table with the database utility.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message AD630 - Changing table type? Delete database table first ?

  The SAP error message AD630, which states "Changing table type? Delete database table first," typically occurs when you attempt to change the type of a database table in the Data Dictionary (SE11) without first deleting the existing database table. This is a safeguard in SAP to prevent data loss or inconsistencies.
  Cause:
  
  Table Type Change: You are trying to change the type of a database table (e.g., from a transparent table to a pooled table or vice versa).
  Existing Data: The existing database table already contains data, and SAP requires that the table be deleted before changing its type to ensure that there is no data loss or corruption.
  
  Solution:
  
  
  Backup Data: Before proceeding, ensure that you back up any data in the existing table. You can do this by exporting the data to a file or creating a new table to store the data temporarily.
  
  
  Delete the Existing Table:
  
  Go to transaction SE11 (Data Dictionary).
  Enter the name of the table you want to change.
  If the table is not empty, you will need to delete the data first. You can do this using transaction SE14 (Database Utility) or by executing a DELETE statement in an ABAP program.
  Once the table is empty, you can delete the table itself.
  
  
  
  Change Table Type:
  
  After deleting the table, you can now change the table type in SE11.
  Make the necessary changes and activate the table.
  
  
  
  Recreate the Table: If you need to keep the data, recreate the table with the new type and then import the data back into the new table.
  
  
  Related Information:
  
  Data Dictionary (SE11): This is where you manage database tables, views, data elements, domains, etc.
  Database Utility (SE14): This transaction is used for managing database objects, including deleting tables and managing database inconsistencies.
  ABAP Programs: You can write a simple ABAP program to delete data from the table if needed.
  Transport Requests: If you are working in a development environment, ensure that your changes are included in a transport request for moving to production.
  
  Important Considerations:
  
  Data Loss: Be very cautious when deleting tables or data, as this action is irreversible.
  Dependencies: Check for any dependencies or foreign key relationships that might be affected by deleting the table.
  Testing: Always test changes in a development or quality assurance environment before applying them to production.
  
  By following these steps, you should be able to resolve the AD630 error and successfully change the table type in SAP.