Question:
I would like to use Wix Forms with Headless, but I’m having trouble obtaining the formId. (The wix-form app is already installed on an existing site)
When I input the formId I guessed from the Wix studio URL, I encounter the following error. (Based on the error message, it seems there are no issues with parameters or initial settings)
applicationError:
  description: Form xxxxxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx not found
  code: FORM_NOT_FOUND
  data: {}
  at Generator.throw (<anonymous>)
What have you already tried:
- 
REST API(curl)
Create Submission | REST - 
SDK(“@therobbs/forms”: “^1.0.24”) visitor or api key access
Create Submission | SDK - 
velo: wix-forms.v2
- 
The createSubmission() : API also resulted in the same error.
 - 
The onSubmissionCreated() : event does not trigger even when submitting a form on the published site.
 
 -