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Flow Release Notes | Version 3.7.8

September 26th, 2025 by Gopal Dixit

This release notes contains updates related to UPI Autopay, Enach UIStreams & UPI.

UPI Autopay

Validation: Adding validation in Pre-debit Notification (PDN) API

  • Effective September 25, 2025
  • For mandates with is_downpayment/ is_first_txn_amount = true, the first PDN can only be created 5 minutes after successful registration.
  • For s_downpayment/ is_first_txn_amount = false, no change - PDN creation allowed immediately.
  • Restriction applies only to the first PDN; subsequent PDNs remain unaffected.
  • Requests violating the rule will fail with error:
{"error_code": "pdn_creation_not_allowed", "message": "First PDN can only be created 5 minutes after registration when is_downpayment/ is_first_txn_amount is enabled"}
  • Merchants must adjust flows to comply.

Feature: Extended Refund API to support UPI Autopay transactions

  • Existing Refund API for UPI extended to handle Autopay refunds.

  • Updated callback structure to identify the callbacks:

    • UPI → UPI Refund (existing)
    • Autopay → UPI Autopay Refund (new)

  • Supports partial refunds for Autopay as well.

  • Refunds can be initiated only for T+30days. Where T is presentation date.

Refund API Documentation - here

Check Refund Status API - here

Enach UIStreams

Addition: Mandate Registration Form Optimization

  • Form layout standardized across flows (with/without user block).
  • Bank Name to be displayed top-right of registration form.
  • Date to be displayed top-left of registration form.

UPI Collections Billing: We've enhanced our metering logic to ensure fairer billing. You will no longer be charged transaction or auto-refund fees for any UPI push transaction that is automatically blocked as per your account settings. This guarantees you are only billed for transactions you successfully accept.