Modules - OMS, PIM and WMS in one online-store admin
How OMS, PIM and WMS differ, and why an online store should not bolt them on as plugins. One data model in 2sell.
PIM — source of truth for the product
PIM is the goods card: SKU, slug, copy, photos, VAT, weight, Omnibus, channels. The web store and marketplaces read from here instead of keeping copies in three admins.
If copy and price live only in the storefront template, Allegro will still get another version. One card ends that split.
OMS — a queue, not an inbox
OMS collects orders from every channel: status, payment, picking, return, note. Staff do not jump between Allegro, Empik and the web admin.
Status history stays on the order. That is the basis for claims and KSeF, not an optional log.
WMS — stock you can actually sell
WMS knows how many units sit in Białystok, how many in Wrocław, how many are reserved for a cart. Dropshipping is the same mechanism with a different stock source.
A separate WMS bolted on as a plugin lags by an import. In 2sell the reservation drops in the same transaction as the order.
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October 2026
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