Make.com · infra · fg-0048
One bad item makes a polling trigger retry the same item forever and block everything behind it
The same error repeats every polling interval
Verified 2026-09-02 · Confirmed by 0 builders · Trust 50/100
Cause
When a run errors, a polling trigger does not advance its position, so the same malformed item is fetched again each cycle and newer items queue behind it. A module that marks an input as required fails on any item that lacks it, even if nothing downstream uses its output.
Fix
Add a filter right after the trigger that requires every field later modules treat as required, so malformed items are skipped and the position advances. Remove unused modules that declare required inputs.
Apply
Filter after the trigger with Basic operators: {{1.fieldA}} Exists AND {{1.fieldB}} ExistsAffects: Make polling triggers (Google Calendar watch events, Gmail, Twilio), July to September 2026
Have your agent know this before it fails
claude mcp add --transport http footgun https://getfootgun.com/api/mcp