Maintain internal variants for test case 
If you have used import parameters for a test case, you can create and save variants for it by assigning values to the import parameters.
1. Enter the test case name in the CATT maintenance transaction initial screen
2. Choose Goto
3. Choose Variants
® Create. You go to the new variant maintenance screen.4. Copy the default number or enter any other eight-character name.

You cannot use five-digit numerical values for local variants.

Import parameters which are used in transaction input screens can be maintained in those input screens by choosing Maintenance in screen. You go to the initial screen of the first transaction called by TCD, and can navigate among the screens with the scrolling functions . Only parameterized fields are ready for input. If the parameters have default values, they are displayed. If you change a value, it is the value for the current variant.
Go back to the current variant maintenance screen with Back.