Updates

Shopify Checkout

• Improved Transaction API timeout handling so checkout returns a structured payment failure response with the OpenPath correlation id instead of treating empty/504 responses as parse-only warnings.

Transaction API

• Added slow /v1/nmi transaction request logging with elapsed time, correlation id, site key, transaction type, and order id to help trace gateway timeout events across systems.

Patches

Shopify Checkout

• Fixed duplicate transaction detection to search the previous four hours instead of four hours in the future, improving protection after unknown Transaction API outcomes.

Shopify Checkout

• Stopped retrying GatewayTimeout sale/auth responses when the transaction outcome is unknown, reducing duplicate-charge risk.

Shopify Checkout

• Rebuilt form content per Transaction API send attempt to avoid reusing request content across posts.

Transaction API

• Added warning telemetry before upstream timeout thresholds so future Sentry/log lookups can confirm whether Transaction API continued processing after checkout received a 504.

Environments

• Development PUBLISHED
• Staging pending
• Production pending

Systems Effected

• API's
  • Transaction D
• UI's
  • Shopify Checkout D
• D= Development, S = Staging, P# = Production[Server]