At a glance
Listings Drifting from BC counts the SKUs whose Mercari listing no longer matches the source-of-truth BigCommerce (BC) record, in price, title, condition, or availability. It is a cross-platform card, so it measures the gap between two systems, not a single Mercari figure. The table breaks the drift down row by row so you can see exactly which SKUs are out of sync.
Calculation
Vortex IQ matches each Mercari listing to its corresponding BigCommerce SKU and compares the key fields, price, title, condition, and availability, between the two. Where any field disagrees, the SKU is counted as drifting and surfaced as a row in the table with the mismatched field shown. The comparison runs across the window so transient mid-sync states settle out. Because this is a two-system comparison, a clean Mercari listing can still appear here if BC has moved underneath it.Worked example
A representative reading of Listings Drifting from BC for a typical Mercari reseller. On 21 Mar 26 the table shows 14 drifting SKUs, over the alert line of 10. Reading the rows, six show a price mismatch where BC was marked down for a sale but Mercari still carries the old higher price, five show a condition mismatch where an item was re-graded from ‘Good’ to ‘Like New’ in BC but not on Mercari, and three are marked sold-out in BC yet still live on Mercari. The reading tells you a recent BC price-and-grading pass never propagated to the marketplace. The action is to run a sync for the listed SKUs, prioritising the three availability mismatches first because they risk overselling. Cross-referencemer_xc_listed_but_oos_on_bc for the items already gone elsewhere, and mer_xc_feed_rejection_vs_listings to check whether failed feed publishing is part of why the sync never landed. Vortex Mind traces upstream causes such as a BC bulk edit that bypassed the sync job, and Ask Viq answers plain-English questions like “which SKUs drifted on price in the last week”.
Sibling cards merchants should reference together
Reconciling against Mercari
Where to look in Mercari’s own dashboard: Mercari shows you only what is live on Mercari, so it cannot reveal a gap against BigCommerce on its own. To see drift by hand you would open a SKU in Mercari and a SKU in BC and compare the two side by side. The comparison here is Mercari versus BC, which means the Mercari dashboard alone will never show the gap; you need both systems in view. Why the Vortex IQ value may legitimately differ:
Cross-connector reconciliation: Because this is a Mercari-versus-BigCommerce comparison, always treat BC as the source of truth and sync Mercari toward it, not the reverse. For divergence investigations, use Vortex Mind.