If having issue in Zoho Forms, check the following:
1. Zoho Forms can be edited only by one user.
2. You must always keep making sure your integration captures all the mandatory fields of the entity you wish to create in Zoho CRM.
If it's a deal, it must capture all of those (see image below):
If other users (who did not create the form) wish to edit a Zoho Form, there are 2 options:
1. Using the From owner credentials, or
2. Asking the From owner to pass the ownership of that Form to the new user.