3rd Party: Reddit Ads connections are failing due to an HTTP 503 backend read error

This incident has been resolved. We have observed that instance rates are returning to normal levels, and affected connectors are syncing successfully.

Incident Summary

Description:
Reddit’s Ads API was returning HTTP 503 responses on certain non-report metadata endpoints, including /me/businesses and /businesses/{id}/ad_accounts, causing syncs to fail with "jakarta.ws.rs.ServiceUnavailableException: HTTP 503 backend read error".

Timeline:
This issue began on Sept 18, 2026, at 5.30 AM UTC and was resolved on Sept 18, 2026, at 7.30 AM UTC.

Cause:
The issue was caused by a temporary outage on Reddit's side.
Reddit's Ads API returned intermittent HTTP 503 responses (containing an Error 54113 marker) on non-report metadata endpoints (/me/businesses, /businesses/{id}/ad_accounts)

Resolution:
This issue has been resolved source-side, and connectors are syncing successfully.

Connectors are now completing syncs successfully again. We have not made any changes on our end, and recovery is occurring on the Reddit Ads side.

We will continue monitoring affected connectors until they return to normal sync functionality.

We have identified that this issue was caused by Reddit’s Ads API returning HTTP 503 responses on certain non-report metadata endpoints, including /me/businesses and /businesses/{id}/ad_accounts. Our investigation indicates this was caused by an upstream Reddit issue.

The issue has been identified and we are working to resolve it.