1. Enter the table name in the initial screen of the ABAP Dictionary.
2. Select object class Database table.
3. Choose Change.

The maintenance screen for the table is displayed.

The following describe how to make changes to existing tables:

• Adding an Append Structure
• Inserting an Include
• Inserting New Fields
• Deleting Existing Fields
• Changing the Data Type, Field Length and Decimal Places of Existing Fields
• Changing the Table Category
• Moving Fields
• Copy Fields from Another Table
• Copying Fields from an Entity Type.
• Deleting Tables