Check forms for missing details, return them for correction. Every one is ready to run, and you can adjust it in plain language.
Check new client appointments against the intake email exchange.
Your clients get appointment confirmation emails with a link to change the time, while your scheduler sees bookings that conflict with the email exchange.
Flag missing answers and repeat IDs on new intake forms.
Keep your tracking table focused on valid form responses, with an email explaining what was added or what needs fixing.