When the same SKU arrives in multiple deliveries, fulfilment teams need a clear way to decide which stock should be picked first. Lot-level receipt history combined with a first-in, first-out approach helps teams identify older available stock, handle partial picks consistently, and reduce the chance of earlier receipts being left behind. This guide explains a practical FIFO workflow for wholesalers, distributors, and small manufacturers managing recurring inventory receipts.
Why Repeated Receipts Make Picking Decisions Harder
A product may have one SKU in your system but several separate receipt histories in the warehouse. For example, a wholesaler might receive 100 units of Item A on Monday and another 150 units of the same SKU the following week. If both receipts are simply treated as one combined quantity, the fulfilment team may not know which stock should be picked first.
That uncertainty becomes more noticeable when stock is spread across different warehouse locations. The earlier 100 units might still be in the main storage area while the newer 150 units are placed closer to the picking zone. Without visibility into when each lot was received, staff may naturally take the easiest stock to reach rather than the oldest available stock.
FIFO, or first in, first out, provides a simple operational rule: where the stock is otherwise suitable for the order, use the oldest available receipt first. This creates a more repeatable picking decision instead of leaving the choice to individual judgement.
Lot-Level Visibility Connects Quantity With Receipt History
FIFO works best when teams can see more than the total quantity of a SKU. Each received lot should retain enough context to show when it entered inventory and where the remaining quantity is currently held.
Consider the same SKU received in two deliveries:
- Delivery 1 adds 80 units to Location A.
- Delivery 2 adds another 120 units to Location B several days later.
The total available quantity may be 200 units, but the receipt history matters when the next customer order is prepared. If 50 units are required, the fulfilment team should be able to identify the 80-unit lot as the older available receipt and pick from it first.
For SMEs building more structured warehouse processes, a practical warehouse workflow can help connect receiving, storage, picking, and fulfilment records without turning everyday operations into a complicated exercise.
FIFO Makes Partial Picks More Consistent
Customer orders do not always consume a full lot. Partial picks are common, especially for distributors and wholesalers supplying smaller quantities from larger receipts.
Suppose the warehouse has an older lot of 30 units and a newer lot of 100 units. A customer order requires 20 units. Under a FIFO approach, the team picks 20 units from the older lot, leaving 10 units behind. When the next order arrives, those remaining 10 units should normally still be considered before moving to the newer 100-unit lot.
This is where clear records matter. If the partial pick is recorded only against the overall SKU quantity, the residual 10 units can easily disappear from operational attention even though they remain physically on the shelf. Lot-aware records help the team see exactly what remains from each receipt.
Watch For Older Stock Left Behind
One of the most common FIFO breakdowns happens when newer stock becomes easier to access than older stock. A new delivery may be placed in a convenient picking location while a small residual quantity from an earlier receipt remains elsewhere.
For example, a small manufacturer may still have 12 units from an earlier component receipt in a secondary storage location. A new delivery of 200 units then arrives and is placed closer to the production picking area. If staff only look at the nearest stock, the older 12 units may continue sitting untouched across several fulfilment cycles.
A useful review habit is to check for older residual lots whenever new stock of the same SKU is received. This does not require a complex warehouse programme. It simply gives supervisors a way to identify small quantities that could otherwise remain overlooked.
An inventory tracking system can support this by keeping stock quantities connected to their operational records rather than relying on memory or informal warehouse instructions.
A Practical FIFO Picking Workflow
For wholesalers, distributors, and small manufacturers with recurring stock receipts, a practical FIFO routine can be kept straightforward:
- Record each stock receipt separately so the received quantity retains its own receipt history.
- Confirm where the received stock is stored and which location currently holds the available quantity.
- When preparing an order, review the available lots for that SKU and identify the oldest suitable stock first.
- If the order only uses part of a lot, record the partial pick so the remaining quantity stays visible against the older receipt.
- Periodically review older residual stock, especially after a newer delivery of the same SKU has arrived.
The objective is not to create extra warehouse administration. It is to give fulfilment staff a consistent decision rule and enough information to follow it.
How TREX Grow Can Help Solve This
TREX Grow can help SMEs connect stock receipts, warehouse locations, and picking activity in a clearer operational workflow.
A practical TREX Grow process can include:
- Record received inventory so each incoming quantity has a traceable receipt history.
- Check the WMS location holding the available stock before fulfilment begins.
- Review available stock and prepare picking activity using the oldest suitable inventory lot first.
- Record partial picks so the remaining quantity from the older lot continues to be visible.
- Review stock records for older residual quantities that may still be sitting in another location after newer stock has arrived.
This gives warehouse and operations teams a clearer basis for deciding what to pick without relying on memory, shelf convenience, or informal instructions. SMEs that want more traceable lot-aware picking can explore TREX Grow as a practical next step for structuring recurring inventory receipts and fulfilment workflows.
