MX Merchant Release (May 10, 2026)
MX Merchant Release Notes
Production Release Date: May 10, 2026
Table of Contents
Features
Checkout API v3 Employee Attribution
Enhanced Checkout API v3 to support an optional employee field on payment creation and retrieval, enabling attribution of transactions to specific staff members for reporting and reconciliation. The field is validated as a string with a maximum of 16 characters, persisted with the payment record, and returned in GET responses without impacting existing integrations.
Enhancements
WebSocket Performance and Stability Improvements
Improved WebSocket performance and stability for Vortex payment integration by introducing a redesigned connection pool with dynamic scaling, idle eviction, and enhanced retry logic with exponential backoff and timeout handling. Refactored client logic for better maintainability, increased test coverage, and ensured timed-out transactions trigger automatic reversals, with post-deployment monitoring in place to validate behavior under production load.
Bugs and Fixes
ePay Logo Display Issue
Resolved an issue where newly uploaded ePay logos were not appearing on the ePay domain despite successful upload. This was caused by inconsistencies in image storage and retrieval. Logo uploads are now properly persisted and served via the configured S3 storage solution, ensuring branding displays correctly across environments.
Recurring Contracts Last Billed Date
Fixed an issue where recurring contracts set to Send Invoice displayed an incorrect Last Billed Date, causing inconsistencies with actual payment records and billing history. The system now updates the Last Billed Date based on the most recent successful payment, ensuring alignment with invoice data and preventing confusion when switching billing methods.
Updated 13 days ago