Square Payments Data Not Syncing
Square payment data that is not syncing in 2026 is almost always a webhook delivery problem. Square sends real-time event notifications to your webhook endpoint — if that endpoint is down, misconfigured, or returning non-2xx responses, you miss events and your records fall behind the actual transaction state.
Why This Happens
- Configuration gaps between tools or services
- Missing integrations or manual workarounds that weren't designed to scale
- Changes in vendor behavior, pricing, or API that weren't communicated clearly
What To Check First
- Verify your current setup matches the vendor's latest documentation
- Look for recent changes — platform updates, new team members, configuration drift
- Check if the problem is consistent or intermittent (different root causes, different fixes)
When To Escalate
- The problem is costing you money or customers per week
- You've spent more than 2 hours on it without progress
- A vendor quoted you more than $500 and you're not sure if it's necessary
Dealing with this right now?
Check your webhook delivery logs in Square Developer Console → Webhooks → [your webhook] → Event deliveries. Filter for failed deliveries and note the event types that are failing. Square retries failed webhooks with exponential backoff for up to 24 hours. Re-deliver missed events using the "Resend" button in the console. For ongoing reliability, implement a nightly reconciliation job that calls the Square List Payments API for the last 48 hours and reconciles against your local records — this catches any webhooks that slipped through.
