Read the quantity label beside the negative-stock symptom
Negative on-hand inventory is a record that says more units left a location than entered it. Negative available quantity can instead indicate that commitments exceed the stock available to cover them. Those require different investigations.
InFlow's documentation explicitly defines negative inventory as an on-hand quantity below zero. Its quantity guide separately explains availability after open commitments. Check the screen and location before deciding the business is physically short. A whole-company total may look positive while one location is negative, especially if a transfer was recorded incompletely or the wrong location was selected during picking.
Diagnose the movement sequence before correction
Select one SKU and the first point where its balance went below zero. Review the preceding receipt, pick, transfer, return and adjustment. Compare the transaction date with when the physical event actually happened. Missing receiving, duplicate dispatch or a wrong unit conversion can each create a negative record.
In a fictional case, a team ships ten knobs from Shop B while the receipt of a ten-unit transfer is missing. Adding ten through a general adjustment might make the balance look right temporarily. If another colleague later receives the original transfer, Shop B gains ten units again. The better investigation traces the open transfer before deciding how to repair the quantity.
Check neighboring records without guessing
Compare the same product at other locations and inspect similar variants. A negative balance of five on one SKU and an unexpected surplus of five on another suggests a possible identity error, but it does not prove one. Verify against picking or receiving evidence before moving quantities between records.
A negative available figure may require a purchasing or allocation decision rather than an inventory correction. For example, eight units physically present against eleven outstanding commitments leaves a three-unit supply gap. Do not add three fictional units to remove the warning. Decide which order can wait, whether replenishment is confirmed and what the responsible team should communicate.
Repair once, then prevent recurrence
Record the identified cause and apply one supported correction with the appropriate owner. Recheck the affected location, other linked locations and any open transactions that might later change the same quantity. Preserve the evidence for an unresolved difference rather than fabricating a receipt.
InFlow warns that sustained negative on-hand balances can also affect its internal calculations and performance; this guide does not promise a particular speed improvement from fixing them. For recurring problems, review who can fulfill orders, how receipts are posted and whether imports use the correct units and locations. A small exception list can make ownership clearer even before a system change. Begin with the oldest negative on-hand item, identify its first unsupported movement, and avoid bulk resetting every negative quantity to zero.
Sources used for this page
These records support the facts and comparisons above. Merchant-controlled records are labelled so you can separate product claims from independent evidence.
- inFlow: negative inventory — Merchant documentation · inflowinventory.com · Merchant-controlled · checked 2026-09-24
- inFlow quantity definitions — Merchant documentation · inflowinventory.com · Merchant-controlled · checked 2026-09-24