Sometimes team members (identified by hubspot role "Team") submit this form in which case we don't want their data to be submitted/updated in Hubspot. How would I identify if the contact is part of the team before submitting the data?
That depends; in general, there aren't and server side validation options for form submissions that come in via the API. It's up to you to do client side validation; in this case, that means preventing members of your team from submitting the form. How exactly you do this depends on your implementation; maybe you check the email field, or use some other criteria to prevent the submission.
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