Fee / GST mismatch

Gateway fee/GST deducted incorrectly (open), ₹11.14. Rule stage1.fee_and_gst_on_fee; 3 record(s).

₹11.14Amount at riskopen14 Oct 2026payment pay_DhEGXxJin76xiC

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 ₹1.10 + GST ₹0.20; the settlement deducted fee ₹1.10 + GST ₹11.34.

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_DhEGXxJin76xiC, recoverable from Gateway

Pending approval · never auto-posted

Account	Debit	Credit
Receivable from Gateway	₹11.14
GST Input Credit		₹11.14
Total	₹11.14	₹11.14

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_DhEGXxJin76xiC

order id: order_ZvqQJH8rSfSKKc
amount: ₹63.00
method: upi
status: captured
captured at: 2026-10-13T19:15:06+05:30

Settlement itemsitm_0002940

settlement id: setl_8UkoELBoD6vWdn
entity type: payment
entity id: pay_DhEGXxJin76xiC
gross: ₹63.00
fee: ₹1.10
gst: ₹11.34
net: ₹50.56

Settlementsetl_8UkoELBoD6vWdn

utr: SBINN26287993118
amount: ₹79,959.85
settled at: 2026-10-14
created at: 2026-10-14T09:05:00+05:30
item count: 20
fee total: ₹1,429.60
gst total: ₹268.47

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": 110,
    "fee_inr": "₹1.10",
    "gst_paise": 20,
    "gst_inr": "₹0.20"
  },
  "actual": {
    "fee_paise": 110,
    "fee_inr": "₹1.10",
    "gst_paise": 1134,
    "gst_inr": "₹11.34",
    "net_paise": 5056,
    "net_inr": "₹50.56"
  },
  "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=4bec8399-a87d-418c-97fb-253ecdb95da8 · source=deterministic_fallback · fallback_reason=no_provider · total_paise=1114