Fee / GST mismatch

Gateway fee/GST deducted incorrectly (open), ₹112.77. Rule stage1.fee_and_gst_on_fee; 3 record(s).

₹112.77Amount at riskopen26 Oct 2026payment pay_bNy6ynlrpRBLHe

Explanation

Generated from the read-only evidence below. It never changes a match or a record.

Deterministic template · LLM not used

GST was computed on the payment amount instead of on the gateway fee

Expected fee ₹11.16 + GST ₹2.01; the settlement deducted fee ₹11.16 + GST ₹114.78.

Recommended action

Raise the over-deduction with the gateway and book a receivable for the excess.

Requires human reviewConfidence 90%· Cites 3 evidence ids, all verified to be in the bundle

Draft correcting entry

Excess gateway fee/GST deducted for pay_bNy6ynlrpRBLHe, recoverable from Gateway

Pending approval · never auto-posted

Account	Debit	Credit
Receivable from Gateway	₹112.77
GST Input Credit		₹112.77
Total	₹112.77	₹112.77

Amounts come from the deterministic engine and always balance. Drafts are stored as pending_approval and are never posted to the ledger.

Evidence records

Read-only source records involved in this exception.

Paymentpay_bNy6ynlrpRBLHe

order id: order_NPNghSdpZ7NgqS
amount: ₹637.67
method: upi
status: captured
captured at: 2026-10-25T22:07:13+05:30

Settlement itemsitm_0004084

settlement id: setl_i3RBetJ4LK8JsA
entity type: payment
entity id: pay_bNy6ynlrpRBLHe
gross: ₹637.67
fee: ₹11.16
gst: ₹114.78
net: ₹511.73

Settlementsetl_i3RBetJ4LK8JsA

utr: AXISN26299002256
amount: ₹36,126.76
settled at: 2026-10-26
created at: 2026-10-26T09:04:00+05:30
item count: 13
fee total: ₹647.56
gst total: ₹229.33

Rule trace

The deterministic rule that fired and what it saw.

{
  "rule": "stage1.fee_and_gst_on_fee",
  "fee_bps": 175,
  "gst_bps": 1800,
  "expected": {
    "fee_paise": 1116,
    "fee_inr": "₹11.16",
    "gst_paise": 201,
    "gst_inr": "₹2.01"
  },
  "actual": {
    "fee_paise": 1116,
    "fee_inr": "₹11.16",
    "gst_paise": 11478,
    "gst_inr": "₹114.78",
    "net_paise": 51173,
    "net_inr": "₹511.73"
  },
  "gst_matches_wrong_base": true,
  "arithmetic_ok": true
}

Audit history

Append-only. Actor: system, llm or human.

systeminvestigation2026-11-03 10:31:04 UTC
source=deterministic_fallback · fallback_reason=no_provider · review_policy_applied=false
systemjournal draft2026-11-03 10:31:04 UTC
exception_id=60cb464a-c112-497e-b447-1f00402ade83 · source=deterministic_fallback · fallback_reason=no_provider · total_paise=11277