Diagnosis
On the initial screen, you have chosen function Header full. Asyou have not entered an alternative, but there is more than onealternative, the system does not know which alternative's header youwant to edit or display.

Procedure
You have two options:
In the alternative field, enter the required alternative andchoose function Header full again.
Press ENTER. You see a list of all the alternatives.
If you want to change the header for an alternative, select thisalternative.
If you are in display mode, select the alternatives whose headers youwant to display.
Choose function Goto --> Header full.