5 critical WMS and 1C integration mistakes before switching to unit-level labeling tracking from June 1

The shift to unit-level tracking changes not only product marking rules but also warehouse automation requirements. The WMS must now track every Data Matrix code from receiving to shipment, and 1C must pass that data to the UPD and GIS MT without errors. We cover which processes to check in WMS and 1C, why discrepancies arise between systems, what fines businesses face for marking errors, and how to prepare a warehouse for the new requirements.

Since June 1, 2026 companies in new product categories must switch to item-level tracking. Now, through EDI it's necessary to transmit not only the GTIN and product quantity, but also the Data Matrix code of the specific product unit.

If the WMS and 1C can't handle this kind of data, the warehouse will face UPD errors, rejections from Chestny Znak, and a halt to part of its shipments.

From November 1, 2026, the requirements will extend to dairy products with a shelf life over 40 days.

With bulk/lot-based accounting, the system works with goods at the item-master level: it passes GTIN and quantity without tying them to specific units. This method remains only for some product groups, gradually giving way to unit-level tracking. After the switch, warehouse logic becomes more granular - the WMS records Data Matrix codes on receipt and tracks them inside the warehouse until shipment.

1C uses this data to generate the UPD and send it via EDI. CRPT notes, that businesses run into the most problems specifically during the transition to item-level tracking. Organizations that previously tracked only product quantity are running into WMS errors, discrepancies in 1C and stuck UPDs due to incorrect handling of codes.

The table lists the key documents and requirements to check before switching to item-level tracking.

Below we cover the problems that most often keep a warehouse from working properly with marking.

According to CRPT technical requirements, working with Data Matrix requires handheld terminals with a 2D scanner - standard linear scanners physically cannot read a two-dimensional code. When choosing equipment, pay attention to recognition speed, support for damaged codes, and offline operation.

Now Chestny Znak, cash registers and EDI systems will automatically send violation data to government systems. If WMS, 1C or EDI submit incorrect marking code data, the system will issue a ruling without an inspector and send it through Gosuslugi.

This means any errors in data exchange between EDI, WMS and 1C significantly affect company costs. A lost code, a duplicate in the UPD, or a discrepancy can cause document rejection, fines and shipment problems. Fines for marking errors:

Situation: the RosLogistic holding ran into trouble after online order volume grew - order line count nearly doubled, and shipping accuracy dropped to 91%. The warehouse operated without location-based storage: staff placed goods in any free zone, and pickers assembled orders from paper lists. Finding one item took up to 20 minutes, and inventory counts took three days.

The old accounting system added extra difficulty: any change had to be approved through an outside contractor, with updates taking several days. What was done: the partner team implemented WMS built on 1C, connecting warehouse zones one by one - from receiving to shipping. The warehouse introduced address-based storage, split zones by ABC classification, and set up picking routes.

High-turnover items were placed near the shipping zone, and small-piece orders began to be picked using the cluster method. To handle marking, experts connected data terminals with 2D scanners. During receipt, the system immediately checks Data Matrix codes against the UPD and flags errors before the item reaches the warehouse. Control scales were also installed in the shipping zone to detect mis-picks faster.

Before launch, staff tested the WMS and data terminals in a separate warehouse zone, then gradually switched to the new solution without stopping core operations. Results after a few months: - Picking accuracy rose from 91% to 99.8%. Returns due to mis-picks dropped to 0.3%, and the company cut logistics losses by about 4.7 million rubles a year. - Receiving a truck with 33 pallets now takes about 45 minutes instead of two hours.

The system checks marking codes right during receiving and shows errors before goods are put away. - Order picking now takes 9 minutes instead of the previous 35-40. In one pass, staff assemble several orders at once. - Inventory count takes about eight hours instead of three days, because the WMS shows bins with discrepancies and helps check stock faster. - Useful warehouse load grew 25%. Address-based storage helped remove empty and unused zones.