Fee / GST mismatch

Gateway fee/GST deducted incorrectly (open), ₹135.47. Rule stage1.fee_and_gst_on_fee; 3 record(s).

₹135.47Amount at riskopen15 Oct 2026payment pay_lXV2LdR23Za4xu

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 ₹13.41 + GST ₹2.41; the settlement deducted fee ₹13.41 + GST ₹137.88.

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_lXV2LdR23Za4xu, recoverable from Gateway

Pending approval · never auto-posted

Account	Debit	Credit
Receivable from Gateway	₹135.47
GST Input Credit		₹135.47
Total	₹135.47	₹135.47

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_lXV2LdR23Za4xu

order id: order_YqXtF1VhdBwAcd
amount: ₹766.00
method: upi
status: captured
captured at: 2026-10-14T15:57:18+05:30

Settlement itemsitm_0003056

settlement id: setl_71z5tCwhQcjdHA
entity type: payment
entity id: pay_lXV2LdR23Za4xu
gross: ₹766.00
fee: ₹13.41
gst: ₹137.88
net: ₹614.71

Settlementsetl_71z5tCwhQcjdHA

utr: ICICN26288409381
amount: ₹1,27,987.62
settled at: 2026-10-15
created at: 2026-10-15T09:05:00+05:30
item count: 20
fee total: ₹2,289.45
gst total: ₹547.58

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": 1341,
    "fee_inr": "₹13.41",
    "gst_paise": 241,
    "gst_inr": "₹2.41"
  },
  "actual": {
    "fee_paise": 1341,
    "fee_inr": "₹13.41",
    "gst_paise": 13788,
    "gst_inr": "₹137.88",
    "net_paise": 61471,
    "net_inr": "₹614.71"
  },
  "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=0b1a78de-c3af-423e-95bc-d7a4c839e038 · source=deterministic_fallback · fallback_reason=no_provider · total_paise=13547