Require field entry if specific dropdown options selected
I've created a stand alone form (adobe Acrobat Pro) where users fill out the form and email it in. Question, in the form, 2 of the fields are RequestType and TrackingNumber. RequestType is the dropdown field and it has 3 options (Initial, Modification, and Cancellation). How can I make it to where if either Modification or Cancellation dropdown options are selected the user can't save the form until something is entered in the TrackingNumber field?
