Hi,Here is a sample with a required field:
https://acrobat.com/#d=JXrO*Eb8bm9jtqFWwxYmsAThe three email buttons
will not proceed until the required field(s) are completed. This just
checks that the required fields are not null. If you want to verify the
quality/correctness of the data that the user is inputting then you
would do that at object/field validation. Niall