Lot, expiry, EDI, AP. One loop or four spreadsheets.

A flagged batch of milk powder lot L-77 needs a downstream FSMA-204 trace. L-77 fed four batches (B-9971, B-9974, B-9982, B-9991) across the W21 production window. Each batch produced finished pallets across twelve SKUs (PMR-FB-12 yogurt, PMR-FB-14 cream, PMR-FB-22 cheese, and nine others). Each pallet shipped against retail destinations across thirty-eight stores in the Region North footprint. The fan-out walk crosses LIMS, plant batch sheets, AP receipt logs, and the WMS shipment ledger. typically 18-22 hours of QA + planning + IT time. The trace is correct but the customer SLA is 24 hours and the regulatory clock is shorter.

PMR-FB-12 yogurt has a 28-day shelf life from production. The Cooler-West WMS bin holds lots with rolling expiry windows from W19 through W25. The pick list for the W22 Region-North retailer EDI 850 was built on FIFO logic against bin entry date rather than FEFO against expiry date. The W19 lot in Cooler-West-A12 with 7 days remaining shelf life was supposed to ship first; instead the W21 lot from Cooler-West-A18 with 20 days remaining shipped, leaving 1,280 units of the W19 lot to obsolesce against an 11-day stale forecast.

The W22 weekly EDI 850 from the largest Region-North retailer transmits at 06:14 Monday with PO# 4412881 against 18 line items totalling $48,200. The same PO retransmits at 11:48 with the same PO number and identical lines because the retailer's VAN had an acknowledgement timeout. The Polymr-less AP queue creates two open orders. Plant fulfills against the first, the second sits in "expected" status, and three weeks later AP cannot reconcile against the single supplier invoice. Polymr collapses the duplicate at receipt time against the EDI signature hash.

B-9971 of PMR-FB-14 cream finishes its cook step at 11:42 Tuesday against a target yield of 92%. The operator measures actual yield at 87.4% during the transfer to packaging at 11:58 but the entry into the MES does not happen until end-of-shift batch close at 15:30. the operator was running B-9974 in parallel. The afternoon plan continues to project against 92% across the next three batches. The downstream packaging line under-fills the Region-North EDI 856 ASN by 320 units against PO 4412881 and the retailer chargeback hits at month-end.

V-244 co-packs PMR-FB-22 cheese against the standing weekly order. Their W22 ASN against PO-84179 lists 1,140 units across 18 pallets but indicates the pallets carry a mixed-lot composition. pallets 1-6 are V-244 internal lot V44-2218, pallets 7-12 are V44-2221, pallets 13-18 are V44-2224. Each lot needs to land separately in the plant lot ledger to maintain genealogy. The receiving clerk transcribes the lot break manually from the BOL footnote and gets it right most weeks. The week he is short-staffed, the entire 1,140 units land under V44-2218 and the genealogy chain breaks for the downstream blending step.

The W22 AP run reconciles 22 supplier invoice lines against the PO commits and the goods receipt records. Eight fail: V-218 short-shipped 32 units against PO-84179, V-244 shipped a different lot than the ASN indicated against PO-84212, V-301 invoiced a price 4.2% above the PO commit on PO-84228, and so on. Pre-Polymr the failures land in a monthly batch and supplier credits are renegotiated rather than recovered against the original PO. Same-day catch turns the negotiation into a debit memo.