Understanding 403 Error: Webhook Limitations and Auto-Dedupe Issues

I’m getting a 403 error for sending webhook data to a table with about 13K records that has auto-dedupe on w/ an error message of “Record limit reached for webhook”. Assuming this means there are 50k webhook attempts per source? Or is it table? I assumed the webhook would work up until the table reached its limit but guessing not. Additional clarity would be appreciated. Thanks