Apex Parts Distribution is a regional aftermarket auto parts distributor serving independent repair shops, dealership service departments, and fleet operators across two warehouse facilities. At peak, they ship over 800 orders per day — a mix of single-line rush orders for a car already on a lift and multi-line wholesale orders going to shop inventory.
They ran on Acumatica. Their fulfillment WMS was a separate system that never quite stayed in sync with it.
Auto parts SKU density is brutal. A distributor might carry hundreds of brake pad SKUs differentiated only by application year and vehicle trim. Paper pick tickets and visual SKU verification worked — until they didn't. At volume, pickers started pattern-matching on part number prefixes and reaching for the wrong bin.
The error rate was running between two and four percent of shipped lines. That sounds small. Across 800 orders a day it meant 16 to 32 wrong parts shipped daily. Each one generated a return, a credit memo, a reshipment, and a phone call from a shop that had a customer waiting.
The pack station had no systematic verification. Workers eyeballed part numbers before sealing boxes. Labels were generated in one system, printed from another, and manually applied — a three-step process that occasionally put the right label on the wrong box.
Across two facilities running slightly different processes, there was no single view of what was picked, what was packed, and what had actually shipped — not without reconciling two systems against Acumatica manually.
WMSi replaced the disconnected WMS with a scanner-native fulfillment workflow anchored directly to Acumatica Sales Orders and Shipment documents. Pickers work from Zebra scanners. Every pick line requires a barcode scan of the item — the scanner confirms the right SKU against the shipment before allowing the picker to move on. A wrong part scan is rejected immediately, at the bin, before it ever reaches a box.
At the pack station, each item is scanned again as it's placed in the carton. The pack screen shows exactly what's expected and flags any discrepancy before the box is sealed. Short picks are handled in the workflow — not discovered after the fact during a reconciliation run. When the carton is sealed, a carton label prints automatically to the nearest station printer. No manual step, no mismatched label.
At ship, the carrier label — purchased through WMSi's rate shopping engine — prints automatically. Tracking numbers flow back to Acumatica and to the customer without anyone copying and pasting between systems.
Both facilities run the same workflow from the same system. The manager portal shows pick, pack, and ship status across both locations in real time — no reconciliation, no phone calls between facilities to check status.
Within 60 days of go-live, pick errors dropped from two to four percent to under 0.1 percent. The scan-at-pick and scan-at-pack double verification caught errors that the old visual process missed consistently.
The manual label process — three steps across two systems — collapsed to zero steps. Carton labels print on seal. Carrier labels print on ship. The packing team stopped handling label generation entirely.
The two-system reconciliation problem disappeared. Acumatica became the single source of truth for order status because WMSi writes every fulfillment event directly to it. The operations manager gained a real-time view of outbound status across both facilities from a single portal screen.
Apex Parts Distribution is an illustrative composite based on patterns common in high-volume auto parts distribution. Metrics reflect outcomes typical of operations in this profile based on real-world WMS implementation experience. Individual results vary.
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