By default, the /PUD Period Check determines when an update runs. Setting this to "-" avoids checks.
The "Execute/Schedule/Exit" prompt is usually prompted by a process set up with the Generic Report Interface, aka /GRIM. Does your paragraph have a line that says EXEC "GRI" ?? That process loads the parameter selection screen defined by /GRIM, usually with the same process name as the paragraph.
There's a lot of GRIM discussions elsewhere in this forum.
--Tom