How Indian Retailers Catch Supplier Short Supply Before Stockouts

Why do shelves run empty when the purchase order says stock is on the way?

Because a purchase order records what you asked for, not what the supplier sent. When a supplier ships 70 units against an order of 100 and nobody records the gap, your system keeps counting the missing 30 as incoming stock, so no new reorder is raised.

This is short supply, and it is one of the quietest leaks in a multi-store Indian retail chain. It does not show up as theft or damage. It shows up as a best seller that is "on order" for three weeks and out of stock on every shelf. This guide covers how to see short supply, measure it by supplier, and act on it before the stockout happens.

What exactly is short supply, and how is it different from a receiving error?

Short supply is when a supplier delivers less than the quantity on the purchase order, with or without telling you. A receiving error is when your own team miscounts or mis-scans a delivery that was complete. Both leave stock short, but they need different fixes.

The difference matters because the owner of the problem changes. A receiving error is fixed inside your warehouse, and we covered that in how receiving errors cost grocery chains crores. Short supply is fixed in a conversation with the supplier, backed by a record that neither side can dispute.

How does short supply turn into a stockout?

It turns into a stockout through your own reorder logic. Most reorder rules subtract stock already on order, so a product with 30 phantom units "on the way" looks covered, and the system waits.

1. You raise a purchase order for 100 units of a fast mover.
2. The supplier delivers 70 and the order is closed or left open without anyone comparing the two numbers.
3. The system still believes 30 units are coming, so the product does not show as low.
4. Stores sell through, the shelf empties, and online orders for it get cancelled or backordered.
5. By the time someone notices, you have lost the sales and the supplier's next slot is days away.

The same mechanism hides inside a single store too, but it is far worse across a chain, because one short delivery to a central warehouse starves every store it feeds. If sellable stock is also sitting unrecorded after delivery, read how putaway delays hide sellable stock, since the two problems stack on top of each other.

How to track supplier short supply in your retail chain

Track it by comparing every delivery with its purchase order on the day it arrives and recording the difference as its own line. You do not need new software to start, only a rule that no delivery is closed without that comparison.

1. Match every delivery to a purchase order number before the vehicle is unloaded, and refuse to receive anything that has no order behind it.
2. Count what arrived against the ordered quantity, line by line, and record the received number even when it is lower.
3. Record the gap as short supply with the supplier name, product and date, instead of leaving the order open with no note.
4. Send the supplier a written shortfall note the same day, with the order number, ordered quantity, received quantity and the date you expect the balance.
5. Decide on the balance within 48 hours: wait for it, cancel it, or re-source it from another supplier.
6. Calculate each supplier's fill rate every month: units received divided by units ordered.
7. Review the lowest fill rates with the supplier before you place the next large order.

Step 5 is the one that saves sales. A balance you have not decided about is stock you cannot plan around. Cancelling it explicitly tells the system the units are not coming, and reorder can act.

What is a good supplier fill rate, and what should you do about a weak one?

There is no single public benchmark for Indian retail, so set your own from your last three months of orders. What matters is the trend per supplier and the value of what is missing, not a universal percentage.

Fill rate on its own can mislead. A supplier at 95 percent who always misses your best seller hurts you more than one at 85 percent who misses slow items. Weigh the shortfall by what the product sells and earns.

• Consistent small gaps: raise the order quantity slightly for that supplier, or add a second source for fast movers.
• Occasional large gaps: ask for advance notice of stock-outs at their end, and agree a rule for partial dispatches.
• Short supply invoiced as full: ask for a credit note. Under GST, a supplier can reduce a tax invoice with a credit note, and the rules sit on the CBIC GST portal. Your accountant should confirm the exact treatment for your case.
• Repeated gaps with no change: move volume away from that supplier, and keep the written record that justifies it.

How does short supply connect to payments and returns?

It connects because you should only pay for what you received. If the invoice says 100 and you received 70, paying in full means you have financed the supplier's shortfall, and recovering it later is slow.

Match the quantity received to the invoice before any payment is released. We wrote about the money side in how Indian retail chains stop vendor payment leakage. When goods are rejected after receipt, the supplier return is a separate trail, covered in how return-to-vendor delays drain working capital.

For chains that sell on multiple channels, short supply also affects what you can promise customers. Overselling on the strength of stock that was never delivered creates cancellations, which carry their own cost. The business case for tighter supplier control is part of running the operation as a whole, a theme the Retailers Association of India regularly raises for organised Indian retail.

How can software help without taking over the process?

Software helps by keeping the order, the received quantity and the open balance in one place, so the gap is visible without anyone building a spreadsheet. The process rules above still have to be followed by people.

Commmerce is an Omnichannel Retail Operating System for Indian retailers, and its replenishment screen raises purchase orders per supplier and nets stock already on order off the suggestion. That is useful, and it is exactly why an open balance you never close can hide a shortage. Commmerce also flags a purchase order that has had nothing received against it for a fortnight, which catches the complete no-show but not a partial delivery, so the dock comparison in the steps above is still your job. For the reorder side, see how multi-store auto reorder works.

For tax invoices and credit notes, the GST Network site is the reference for how the filing side works.

Frequently asked questions

What is supplier fill rate?

Supplier fill rate is the share of ordered units a supplier actually delivers. Divide units received by units ordered over a period, per supplier. A low or falling number means you cannot rely on their purchase orders to cover demand.

Should I close a purchase order after a partial delivery?

Only after you decide on the balance. Either keep it open with a confirmed delivery date, or cancel the balance so reorder logic stops counting it as incoming stock.

Can I ask a supplier for a credit note for short supply?

Yes, if you were invoiced for more than was delivered. Ask in writing with the order number and received quantity, and let your accountant confirm the GST treatment.

How often should I review supplier fill rates?

Monthly for most chains, and weekly for your fastest-moving products during busy seasons, so a failing supplier is spotted before the next big order.

Is short supply the same as a stock count error?

No. Short supply is the supplier delivering less than ordered. A count error is your own team recording the wrong quantity. Separate the two in your records so the right person fixes the right problem.