Content authored by practitioners with experience at Amazon India, Intuit QuickBooks, and the Tata Group. Meet the team →
Rejection debit notes routinely arrive from auto OEMs after the supplier has already received payment on the original invoice. The supplier owes the OEM a refund or credit for the defective quantity, must issue a Section 34 GST credit note within a statutory window, and needs to reconcile the payment received, the debit received, the credit note issued, and either a refund voucher or a next-invoice offset.
Reconcile four ledger events: original invoice raised, payment received against invoice, rejection debit received from OEM, and Section 34 credit note issued. Match on OEM purchase order reference, original invoice number, and rejected quantity. Determine whether the credit is settled by refund voucher or netted against the next running invoice. Reduce output tax liability in supplier's GSTR-1 Table 9B. Confirm buyer-side ITC reversal via GSTR-2B.
Section 34 CGST credit note requirement, GSTR-1 Table 9B reporting, refund voucher (Rule 51) versus next-invoice offset accounting policy, statutory deadline of November 30 following financial year end, Rule 42 proportionate ITC reversal on buyer side.
Post-payment rejection reconciliation register showing invoice, payment date, rejection debit amount, credit note number and date, settlement method (refund/offset), GSTR-1 Table 9B period, and OEM ITC reversal confirmation.
Rejection debit notes are a routine feature of the Tier-1 auto supplier relationship. Under a normal cycle the OEM raises a rejection debit before payment is released, the supplier reduces its receivable, and both sides carry the reduced amount forward. The complication arises in a specific but frequent scenario: the OEM has already paid the original invoice, and the rejection debit arrives ten, fifteen, or thirty days later — often after quality inspection at the OEM’s assembly line surfaces a defect that was not caught at the goods-inward stage.
This article walks through the reconciliation for that specific scenario: rejection debit received after the original invoice has been paid, from the perspective of the Tier-1 or Tier-2 supplier. The GST treatment is a Section 34 credit note by the supplier, with Rule 42 proportionate input tax credit reversal by the OEM as buyer.
This article is most relevant for finance controllers, GST managers, and accounts receivable teams at auto component manufacturers dealing with OEM buyer accounts where quality-related debit notes are routine.
The reconciliation in one paragraph
When a rejection debit note arrives after payment has been received, the supplier is holding cash that no longer belongs to it against the rejected quantity. The supplier must issue a Section 34 credit note referencing the original invoice, decide whether to refund the debited amount via a Rule 51 refund voucher or net it against the next invoice, report the credit note in GSTR-1 Table 9B so the OEM’s GSTR-2B auto-populates, and confirm that the OEM has reversed proportionate ITC under Rule 42. The reconciliation joins four events on the supplier’s side — invoice, receipt, debit, credit note — and two events on the OEM’s side — ITC availed, ITC reversed.
What the post-payment rejection scenario looks like in India
Post-payment rejection debits are especially common in the Tier-1 auto supply chain because of how OEM quality inspection is structured. At major Indian OEMs — Tata Motors, Mahindra & Mahindra, Maruti Suzuki, Hyundai India, Ashok Leyland — inbound components go through a goods-inward inspection at the stores gate, but a further inspection happens on the assembly line or in end-of-line audit. Latent defects (heat treatment failures, plating adhesion, torque calibration deviations) frequently surface only at the second stage.
Illustrative Tier-1 suppliers where this pattern recurs: Bosch India (electronics and fuel systems), Motherson Sumi / Samvardhana Motherson (wiring harnesses, rearview systems), Bharat Forge (crankshafts, forgings), Sundram Fasteners (fasteners, radiator caps, hubs), Endurance Technologies (suspension, braking), Sona BLW (differential gears, e-axle systems), Uno Minda (formerly Minda Industries — switches, horns, alloy wheels), Rico Auto (aluminium die-castings), Amara Raja Batteries (batteries), and ZF India (transmissions). Payment cycles at these OEMs typically fall in the 30 to 60-day range after invoice submission, while assembly-line defect detection can trigger a rejection debit up to 45 days after receipt of goods.
The consequence: on any given month a mid-size Tier-1 supplier will have 5 to 20 rejection debits arriving against invoices that have already been settled. Without a structured reconciliation, these accumulate as reconciling items in the debtors ledger with no clear closing action.
The regulatory overlay
Section 34 of the CGST Act governs credit notes issued by a supplier. A credit note may be issued where one or more tax invoices for supply of goods or services have been issued and the taxable value or tax charged in the invoice is found to exceed what is payable, or where the goods supplied are returned by the recipient, or where the goods or services are found to be deficient. A rejection debit fits squarely into either the returned-goods or the deficient-goods limb.
The Section 34 credit note must be declared in the GSTR-1 for the month in which it is issued, and no later than the 30th day of November following the end of the financial year in which the supply was made, or the date of furnishing the annual return, whichever is earlier. Beyond that window, the credit note may still be issued for accounting purposes, but it cannot reduce output tax liability.
Rule 51 of the CGST Rules covers refund vouchers. If the supplier chooses to refund the debited amount in cash (or by bank transfer) rather than net it against the next invoice, it may issue a refund voucher documenting the return of consideration. In practice the auto industry norm is netting — reducing the next invoice by the debit amount — because both parties already track a running balance and cash movement is administratively expensive.
Rule 42 of the CGST Rules governs the OEM buyer’s ITC reversal obligation. When the credit note reduces the taxable value of the supply, the recipient must reverse the ITC attributable to the reduction. The reversal is proportionate, not full — this is a critical point often misapplied. If the OEM claimed ITC of ₹1,11,600 on a 730-unit invoice and 100 units are rejected, the reversal is limited to the ITC attributable to those 100 units.
Section 15(3) of the CGST Act conditions post-supply discounts on prior agreement, and requires the recipient to reverse the ITC as a condition of the deduction from taxable value. A quality rejection debit is generally not treated as a discount under Section 15(3) — it is a genuine deficiency remedy under Section 34 — but the ITC reversal obligation on the buyer side arises via Rule 42 either way.
A worked example — illustrative numbers
Sundram Fasteners raises an invoice on Hyundai India for a fastener consignment.
(All figures below are illustrative for pedagogic purposes only — not from any live transaction.)
Day 0 — Invoice raised
| Item | Value |
|---|---|
| Invoice number | INV/SFL/2026/04/117 |
| Quantity | 730 fasteners |
| Rate | ₹850 per unit |
| Taxable value | ₹6,20,500 |
| CGST 9% | ₹55,845 |
| SGST 9% | ₹55,845 |
| Invoice total | ₹7,32,190 |
Day 45 — Payment received
Hyundai India remits ₹7,32,190 via NEFT. UTR captured. Payment posted against INV/SFL/2026/04/117. Receivables ledger: closed. Bank reconciliation: matched.
Day 55 — Rejection debit received
Hyundai India’s assembly line audit identifies 100 fasteners with plating adhesion failure. The rejection debit note is raised.
| Item | Value |
|---|---|
| Rejection debit number | RD/HMIL/2026/06/8422 |
| Original invoice reference | INV/SFL/2026/04/117 |
| Rejected quantity | 100 units |
| Rate | ₹850 |
| Taxable value | ₹85,000 |
| CGST 9% | ₹7,650 |
| SGST 9% | ₹7,650 |
| Debit total | ₹1,00,300 |
The rejection debit is not itself a Section 34 credit note — it is the OEM’s commercial notice that a credit is due from the supplier. The GST-compliant instrument is the supplier-issued credit note.
Day 56 — Section 34 credit note issued by Sundram Fasteners
| Item | Value |
|---|---|
| Credit note number | CN/SFL/2026/06/091 |
| Credit note date | Day 56 |
| Original invoice reference | INV/SFL/2026/04/117 (Day 0) |
| Reason | Goods returned — plating adhesion failure |
| Reduction in taxable value | ₹85,000 |
| Reduction in CGST | ₹7,650 |
| Reduction in SGST | ₹7,650 |
| Total credit | ₹1,00,300 |
Settlement path A — Refund voucher (Rule 51)
Sundram Fasteners raises refund voucher RV/SFL/2026/06/012 for ₹1,00,300 and remits by NEFT to Hyundai India. Cash goes back. The Section 34 credit note stands independently as the tax-adjusting instrument.
Settlement path B — Next-invoice offset (industry norm)
Sundram Fasteners’ next invoice INV/SFL/2026/06/218 raised on Hyundai India for ₹9,45,000 (taxable) plus GST is reduced by the ₹1,00,300 credit. Hyundai India remits the net. The Section 34 credit note is issued and reported independently in Table 9B; the invoice-offset is a purely commercial payment mechanism and does not merge with the credit note document.
GSTR-1 reporting — Sundram Fasteners’ next return
In GSTR-1 for the return period of Day 56, Sundram Fasteners reports in Table 9B — Credit/Debit Notes (Registered): credit note CN/SFL/2026/06/091, credit note date, original invoice INV/SFL/2026/04/117, taxable value reduction ₹85,000, CGST reduction ₹7,650, SGST reduction ₹7,650. Output tax liability for the period is reduced by ₹15,300.
GSTR-2B auto-population — Hyundai India as recipient
Hyundai India’s GSTR-2B for the corresponding period reflects the credit note. Under Rule 42, Hyundai India must reverse ITC of ₹15,300 (proportionate to the rejected 100 units) in Table 4(B) of its GSTR-3B for the same period. If Hyundai India had already availed the full ITC on the original invoice, the reversal cleanly matches. If Hyundai India had availed only partial ITC (due to blocked credit apportionment on some inputs), the reversal is still limited to the tax attributable to the credited quantity.
Common reconciliation breakages
Original invoice reference missing on the credit note. The credit note must reference the original invoice number and date. When suppliers issue credit notes with just the OEM’s rejection debit number as reference — omitting the underlying invoice — GSTR-2B auto-population breaks and the OEM’s ITC reversal cannot be traced back to the originally availed credit.
Netting the credit against next invoice but not issuing a Section 34 credit note. A common accounting shortcut: reduce the next commercial invoice by the debit amount without issuing a separate Section 34 credit note. This under-reports output tax reduction in GSTR-1 and leaves the OEM unable to reverse ITC through the GSTR-2B route — creating an ITC mismatch that the OEM’s IMS (Invoice Management System) will flag.
Credit note issued after the November 30 deadline. Rejection debits arriving in late March or April against the previous financial year’s invoices frequently miss the November-of-following-year deadline. Beyond that date the credit note cannot reduce output tax liability. The commercial refund still happens, but the GST cost is stuck on the supplier’s books.
Cheque-issue date used as payment date for the 180-day ITC clawback trigger. If the OEM has not paid within 180 days of the original invoice and Section 16(2) second proviso ITC reversal has already triggered, the subsequent rejection credit note reconciliation gets tangled with the 180-day partial-payment ITC clawback reversal — two separate ITC events on the same invoice.
Full ITC reversal instead of proportionate. Some OEM finance teams reverse the full ITC on the original invoice when a credit note is received, rather than the proportionate ITC on the rejected quantity. This over-reverses credit. CBIC Circular 170/2021-GST and Suncraft Energy jurisprudence confirm proportionate treatment.
Refund voucher issued instead of Section 34 credit note (or vice versa). These are two different instruments. A refund voucher (Rule 51) documents return of consideration where no supply happened or a supply was cancelled — for example, an advance received but the goods never shipped. A Section 34 credit note applies where supply happened but the value was later reduced. A rejection after receipt is a Section 34 event, not a Rule 51 event; the refund voucher may accompany the credit note if cash is returned, but does not replace it.
Rejection debit netted against a different invoice than the one it relates to. OEMs sometimes apply a rejection debit against whichever invoice is currently open, regardless of which original invoice contained the rejected goods. This severs the traceability required for the Section 34 credit note reference, and creates a chase-back exercise at year-end reconciliation.
How a reconciliation platform handles this
A reconciliation software India built for the auto supplier accounts receivable use case treats the post-payment rejection cycle as a specific state machine per invoice, not a generic receivables workflow. The states progress: invoice raised → payment received → invoice closed → rejection debit received → credit note pending → credit note issued → GSTR-1 filed → GSTR-2B confirmed. Each state transition is logged with the source document reference.
The platform matches on three keys: OEM purchase order, original invoice number, and rejected quantity. A rejection debit arriving without an original invoice reference is held in an unmatched queue for finance review rather than being auto-applied against the current running balance.
For the GST reconciliation software side, the credit note issued in the accounts receivable subledger flows through to GSTR-1 Table 9B via the outbound-supplies report, with the original invoice reference carried through automatically. When the OEM’s GSTR-2B is downloaded in the next cycle, the platform matches the credit note issued to the credit note received on the buyer side, closing the reconciliation loop and confirming that the OEM has picked up the credit for ITC reversal.
For deeper connected coverage on adjacent auto OEM debit-note scenarios, see the sibling articles on retroactive price increase credit note aggregation, retention debit at 5%, and the 180-day ITC clawback boundary. Related supplier-side automation is discussed in the Bosch SupplyOn portal ASN reconciliation article and debtors-creditors reconciliation fundamentals.
The post-payment rejection cycle is a routine feature of auto OEM commercial relationships, not an exception. Treating it as a first-class reconciliation state — with Section 34 credit note issuance, Table 9B reporting, and buyer-side ITC reversal confirmation baked into the workflow — is what separates a compliant finance function from one that carries accumulating reconciling items into every year-end audit.
Content authored by practitioners with experience at Amazon India, Intuit QuickBooks, and the Tata Group. Meet the team →
- ▸ CGST Act 2017 — Section 34 — Credit and debit notes — issuance by supplier where taxable value or tax charged in the tax invoice exceeds the taxable value or tax payable in respect of such supply, or where goods supplied are returned by the recipient.
- ▸ CGST Rules 2017 — Rule 42 — Manner of determination of input tax credit in respect of inputs or input services and reversal thereof.
- ▸ CGST Act 2017 — Section 15(3) — Value of supply — deductions from transaction value allowed only where discount is established under an agreement entered into at or before the time of supply and specifically linked to the relevant invoices; the ITC attributable must have been reversed by the recipient.
- ▸ GSTR-1 Return Format — Table 9B — Credit/Debit Notes (Registered) — reporting of credit and debit notes issued to registered recipients with original invoice reference.
- ▸ CBIC Circular 92/11/2019-GST — Clarification on various doubts related to treatment of sales promotion schemes under GST — including permissible credit notes and financial credit notes.