This article presents sample flows your app can support. You aren't limited to this exact flow, but it can be a helpful jumping off point as you plan your Submissions service plugin integration.
A site visitor enters an email address into a form field and submits the form.
Wix sends a Validate Submission service plugin request to your app.
Your server validates the request. The email isn't valid, and the server sends an object containing the error.
Example of a violation response from your app:
The email field is highlighted on the form, notifying the site visitor that the email is invalid.
After this validation, the site visitor corrects the email and submits the form.
Again Wix sends a Validate Submission service plugin request to your app.
Your server validates the request. The email is valid and the server sends an object containing an empty list.
A site visitor submits the same form again, which is permitted.
Wix sends a Validate Submission service plugin request to your app.
Your server checks for a unique submission token and validates the request. The server finds the duplicate and returns an object containing error.
Example of a violations response from your app:
With this validation violation, the site visitor can't submit this form again.