Reserve qty
Hold back a fixed quantity per SKU for offline sales, wholesale, or your own shop.
Buffer stock
Stop overselling — without leaving stock on the shelf
Reserve buffer qty for offline channels and trade customers. Cap any one marketplace's max allocation. Publish a calculated qty that adjusts in real time.
The problem
Why a single stock number fails
If you push raw on-hand to every channel, the first big order on TikTok Shop sells out stock you've already promised to a trade customer. Buffers solve that.
Max allocation %
No single marketplace can claim more than X% of the publishable qty. Spreads risk across channels.
Publishable qty
The result — a calculated number Synergia360 actually pushes to each channel, refreshed in real time.
The formula
How publishable qty is calculated
Per channel
publishable_qty =
min(
(on_hand − reserved_qty),
floor((on_hand − reserved_qty) × max_allocation_pct)
)
Worked examples
Three real scenarios
Same SKU, three different buffer setups. See exactly what each channel receives.
Conservative
on_hand: 100reserved: 20max_alloc: 50%
→ 40 qty published
Balanced
on_hand: 100reserved: 10max_alloc: 75%
→ 67 qty published
Aggressive
on_hand: 100reserved: 0max_alloc: 100%
→ 100 qty published
Real-time updates
Every order recalculates
Sub-second recalc
An order on Channel A immediately reduces publishable qty on Channels B, C and D — before another shopper can hit Buy.
Low-stock alerts
Configure thresholds per SKU. Get alerted when publishable qty crosses your reorder point.
Run multi-channel without the oversell panic
Buffer stock and max allocation available on every paid plan, starting at Starter (£89/mo).