> ## Documentation Index > Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt > Use this file to discover all available pages before exploring further. # Listings Drifting from BC Source-of-Truth, Walmart Marketplace > Listings Drifting from BC Source-of-Truth for Walmart Marketplace stores. Tracked live in Vortex IQ Nerve Centre. How to read it, why it matters, and how to act on it. **Card class:** [Hero](/nerve-centre/overview#card-classes-explained) • **Category:** [Marketplace](/nerve-centre/connectors#connectors-by-type) ## At a glance > Listings Drifting from BC Source-of-Truth counts SKUs where the Walmart title, price, or image no longer matches your BigCommerce catalogue. BigCommerce is the source-of-truth, so drift means buyers see stale or inconsistent information on Walmart. Beyond confusing shoppers, price drift exposes you to Walmart parity enforcement, which is why this is a hero card. | | | | --------------------- | ----------------------------------------------------------------------------------------------------------------------------------- | | **What it counts** | The number of SKUs whose Walmart title, price, or image differs from the BigCommerce source-of-truth record. | | **Sample type** | Backend API data from Walmart Marketplace, refreshed on the standard data refresh. | | **Why it matters** | Drift creates buyer confusion and, where price is involved, risks Walmart parity enforcement that can suppress or pull the listing. | | **Reading the value** | Lower is better; a rising count means more of the catalogue has fallen out of sync with BigCommerce. | | **Currency** | count | | **Time window** | `30D` | | **Alert trigger** | `>10 SKUs drifting` | | **Sentiment key** | `wal_xc_catalogue_drift_vs_bc` | | **Roles** | owner, marketing, operations | ## Calculation The value is derived by comparing each Walmart Marketplace listing's title, price, and image against the matching BigCommerce source-of-truth record and counting the SKUs where any of those fields differ within the window. The comparison is cross-channel, so it depends on both connectors being linked. See the At a glance summary for the window and unit, and the worked example below for how the count reads in practice. ## Worked example *A representative reading of **Listings Drifting from BC Source-of-Truth** for a typical merchant on Walmart Marketplace.* On 12 Mar 26 a seller sees 17 SKUs flagged as drifting, over the alert line. Inspection shows a recent BigCommerce price update that never propagated to Walmart, leaving 17 items priced higher on the marketplace than on the source store. The action is to resync the affected SKUs so Walmart matches BigCommerce, removing both the buyer confusion and the parity-enforcement exposure. For deeper investigation, use Vortex Mind to trace upstream causes; for natural-language exploration, ask Ask Viq. ## Sibling cards merchants should reference together | Card | Why merchants reach for it | | ------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------- | | [`wal_xc_feed_rejection_vs_listings`](/nerve-centre/kpi-cards/walmart-marketplace/listings-failing-feedonomics-feed-validation) | Feed failures are a common reason updates never reach Walmart. | | [`wal_xc_listed_but_oos_on_bc`](/nerve-centre/kpi-cards/walmart-marketplace/active-walmart-listings-for-oos-skus-on-bc) | Another cross-channel mismatch, this time on availability. | | [`wal_xc_price_parity`](/nerve-centre/kpi-cards/walmart-marketplace/skus-priced-differently-vs-amazon) | Price drift often shows up as a parity gap against Amazon too. | | [`wal_stale_listings`](/nerve-centre/kpi-cards/walmart-marketplace/stale-listings-180d-no-update) | Stale items are the ones most likely to have drifted. | | [`wal_total_listings`](/nerve-centre/kpi-cards/walmart-marketplace/total-listings) | Gives the catalogue total to size the drift against. | ## Reconciling against Walmart Seller Center **Where to look in Walmart Seller Center:** Open the Item / Catalog area and inspect the live title, price, and primary image for a flagged SKU, then compare it directly against the same product record in BigCommerce. **Why the Vortex IQ value may legitimately differ:** | Reason | Direction | What to do | | -------------------------------------------------------------------------------------------------------------- | --------- | ------------------------ | | **Period boundary.** Vortex IQ uses 30D rolling by default; Seller Center may use calendar periods. | Variable | Match the period range. | | **Time zone.** Seller Center uses the account time zone; Vortex IQ aligns to the merchant reporting time zone. | Marginal | Confirm time zone match. | | **Filter scope.** Profile-level filters (fulfilment type, test orders) may narrow the Vortex IQ view. | Variable | Match filter settings. | **Cross-connector reconciliation:** complement with sibling cards in the same category for the full diagnostic picture. For divergence investigations, use Vortex Mind. ## Known limitations / merchant FAQs **Q: How often does Listings Drifting from BC Source-of-Truth update?** The card refreshes on the standard data refresh (typically every 30-60 minutes for live integrations). For real-time signals, force a manual refresh from the dashboard. **Q: Why does my Walmart Seller Center show a different number?** Seller Center shows only the Walmart side and has no view of your BigCommerce values, so it cannot show drift on its own. This card is a cross-channel comparison, which is why the count only exists in Vortex IQ. **Q: Which fields count as drift for this card?** Title, price, and image are the compared fields. A difference in any one of them is enough to flag the SKU, so a single propagated change can clear it. **Q: Can I customise the alert threshold?** Yes, sensitivity thresholds are configurable per profile in the Sensitivity tab. Adjust to match your business baseline rather than relying on the generic default. *** ### Tracked live in Vortex IQ Nerve Centre *Listings Drifting from BC Source-of-Truth* is one of hundreds of KPI pulses Vortex IQ tracks across Walmart Marketplace and 70+ other ecommerce connectors. Nerve Centre runs the detection layer; Vortex Mind investigates the cause when something moves; Ask Viq lets you interrogate any number in plain English. [Start for free](https://app.vortexiq.ai/login) or [book a demo](https://www.vortexiq.ai/contact-us) to see this metric running on your own data.