Choose the inventory source of truth
A physical store, website and marketplaces can sell the same item. Decide which system owns the authoritative stock figures before building synchronization.
Map product identities
Product codes, barcodes and variants need consistent mapping. A mismatch between sizes or colours can be more damaging than a delayed update.
Make order delivery idempotent
Network failures cause retries. Unique order identifiers and transfer logs help avoid sending the same order twice.
Plan reconciliation
Teams should be able to review failed jobs, compare counts and resolve exceptions without guessing what happened.
