If you have the Global Option “Lookup Numbers & Mark Invalid?” enabled for your account, you might want to run automation for Contacts when a number is marked invalid.
You can do that by connecting a Keap API Goal to a sequence, then configuring the goal as follows:
Integration: turboDialCall
CallName: MarkNumberInvalid
You’ll then need to setup the sequence to run actions such as apply a tag indicating the number is invalid and removing the contact from your lists.