Event notification endpoint URL validation failure "URL validation failed. Try again later."

I’m working with the Splash dev team on rebuilding their three Zoom App Marketplace integrations in the instance of Zoom where we host our apps. We were able to successfully submit the SDK we rebuilt, however, for the two Webinar integrations (see below in screenshot), we are unable to submit these because the webhook event subscription we’re trying to validate keeps throwing an error.

We understand the error is requiring us to re-validate the webhook as it is now under a new account and secret webhook token is different on different account. However, since the webhook has been created prior to Oct 2022, we do not require validation unless we modify them, as mentioned here

Published app links:
AMER - App Marketplace
EU - App Marketplace

Hi @zoomintegrationadmin
If the secret token changed for both applications, they you will have to validate your endpoint.
If anything changes it requires validation

Hi Elisa,

Thanks for confirming! We take this to mean we will need to create a new webhook endpoint for the new app we are submitting for marketplace review. Is there anything else we should consider when submitting our app?

Hi @zoomintegrationadmin
I do not believe so.
If it is a brand new app, then keep in mind to provide all the required information for the review process.