I implemented bound input fields to associate event registration form submissions and separate ecommerce checkouts for the same user via user_id_alt. These triggers are passed through Make webhook automations and sent to respective Google Sheets.
The registration page is only accessible when logged in. The majority of submissions we’ve received properly convey user_id_alt for both triggers, however, we occasionally receive submissions missing user_id_alt. I reached out to the registrants in question for screenshots of their My Account pages, and nothing is missing or otherwise indicates that they were unreadable. Considering the data for most submissions passes through without issue, I’m wondering where the selectivity may originate.
I’ve also made dummy submissions in incognito mode without issue.
Any insight is appreciated!