I forgot to follow up here with the resolution to my issue. I opened a ticket with the support team when I didn't hear anything back from the community and here is part of the response I received:
"The error you are seeing means that your webhook is trying to fire too quickly. Webhooks and Quick Base Actions are limited to only firing 10x's a second. With your webhook, it looks like it is trying to push through all 35 records at once, so 35/second. The reason it logs the action as successful is because it will process the first 10, log that action as successful, reach the 10/second limit, and then throw you your 429 error."
My QuNect import is driven by a VB.net script that loops through the files in a folder and Inserts them into QuickBase. My solution was to include a pause after every iteration of the loop so that only one would be loaded per second and thus only one webhook would fire per second.
