A quantity of items in the system that is less than zero.
This situation can occur when a goods issue takes place before the corresponding goods receipt has been recorded.

Of the negative inventory thus describes a Storage quantity below zerowhich arises when more items are withdrawn from the warehouse than are actually available. In SAP Business One This situation can have a variety of effects on the warehouse management and accounting have.
1. definition and causes
On Negative inventory arises when a Goods issue posted before the associated goods receipt recorded was.
Common causes:
- Premature goods issues without prior posting of the goods receipt.
- Missing or incomplete inventory entries.
2. administration and settings
In SAP Business One there are several ways to prevent or manage negative stocks:
Option "Block negative stock"
- Prevents the booking of Documentwhich lead to a stock below zero.
- Settings:
- Company: The negative balance is checked at company level.
- Bearing: Negative stock is monitored separately for each warehouse.
- Article setting: Blocking takes place either at warehouse or company level, depending on the settings in the article master.
Reaction to minimum and maximum stock levels
- In the Document settings the system can be configured in such a way that if the minimum quantity is not reached or the maximum quantity is exceeded, a Warning or the Booking blocked.
Negative quantities in vouchers
- In certain cases, e.g. with Production parts listsnegative quantities can be used, for example when recording By-products.
3. effects and handling
- Inventory correction: For postings with negative balances Correction accounts debited or credited.
- Inventory valuation: In the case of negative stocks, the Document price from the moving average or FIFO price deviate. These deviations are shown on a special account recognised.
- Inventory check: Negative stocks can be recognised in the Stock status report identify or via Drag & Relate with a filter (e.g. "In stock < 0") display.
4. important notes
- Accounting standards: The use of negative stocks can against accounting policies violated. The Blocking of negative stocks is therefore recommended.
- Inventory: Before the inventory it should be ensured that there are no negative stocks, as this can lead to Missing bookings indicates.
- Correction bookings: Missing goods receipts or stock receipts should be posted retrospectively in order to avoid negative stock levels.
- Equalisation account: That Equalisation account for negative stocks should always be checked and balanced.
- Balance sheet account currency: With Transactions in different currencies should Portfolio account currency to "All currencies" be set.
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