> ## 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. # Prime 1-Day / 2-Day Promise Miss Rate, Amazon Prime Shipping (SFP) > % of Prime-promise (1-day / 2-day) shipments delivered late. Amazon's SFP eligibility hinges on this; >1% triggers warning. How to read it, why it matters,... **Metrics type:** [Key Metrics](/nerve-centre/overview#metrics-types-explained) • **Category:** [Shipping & Courier](/nerve-centre/connectors#connectors-by-type) > % of Prime-promise (1-day / 2-day) shipments delivered late. Amazon's SFP eligibility hinges on this; >1% triggers warning. ## At a glance > Inverse of `amazon_prime_sfp_otd_sla` on a 7-day window: percent of Prime-promised (1-Day or 2-Day) shipments delivered late. Used as a fast-cadence early-warning. The 7-day window is what Amazon often uses internally for trending; this card lets ops act before the 30-day SFP eligibility card slips. Above 1% = within Amazon's SFP-warning trigger zone. | | | | ------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **What it counts** | `COUNT(shipments WHERE actual_delivery_date > prime_promise_date AND service IN ('1Day','2Day','SameDay')) / COUNT(shipments WHERE service IN ('1Day','2Day','SameDay') AND status IN ('DELIVERED','FAILED'))` over rolling 7 days. | | **Delivery success criterion** | Carrier POD scan or signature event. | | **On-time threshold** | End of customer-facing Prime promise day. | | **Returns / RTO** | Excluded. | | **Service level scope** | Prime-promised consignments only (1-Day, 2-Day, Same-Day). | | **Money-back-on-late** | Not surfaced here; track on `ama_open_claims`. | | **Buy with Prime** | Same definition. | | **2-Day coverage gaps** | Rural ZIPs / AK/HI/PR excluded from Prime; not in card. | | **Time window** | `7D` (faster cadence than the SFP eligibility card's 30D). | | **Alert trigger** | `>1%`. | | **Roles** | owner, operations | ## Calculation Calculated automatically from your Amazon Prime Shipping (SFP) data. See the At a glance summary above for what the metric tracks and the worked example below for a typical reading. ## Worked example A US merchant on SFP. Reading at 09:00 ET on 18 Mar 26 for the trailing 7 days (11 Mar 26 to 17 Mar 26). | Metric | Value | | ----------------------------- | -------- | | Prime-promised shipments (7D) | 1,725 | | Delivered on time | 1,691 | | Missed | 34 | | **Promise miss rate** | **2.0%** | The card reads **2.0%**, **double the 1% alert** and well above the SFP eligibility threshold (1% miss = 99% on-time = the Amazon-published floor). Five things to notice: 1. **Tripped at 2.0% means 2 of every 100 Prime customers got a broken promise.** This week is materially below the Prime-badge floor. 2. **At sustained 2.0%, the 30-day SFP card will trip in \~3 weeks** if the trend continues. Amazon's warning notification often arrives \~7 days after a sustained 2%+ pattern. Treat this card as the leading indicator that buys you 1 to 2 weeks before the existential SFP card alerts. 3. **34 misses × $5 to $10 Amazon Concession cost = \~$170 to $340 of Concession charges this week alone.** That is direct out-of-pocket cost to the seller as Amazon credits Prime customers. 4. **Investigate by carrier and ZIP via `ama_route_otd`.** Almost always one or two underperforming cohorts (USPS Priority rural, OnTrac specific zone) account for >50% of weekly misses. 5. **Compare against last week.** If 7-day miss rate jumped from 1.2% to 2.0% week-on-week, the 67% rise is the pattern signal. Most likely cause: volume rise straining a carrier's pickup capacity, weather event in the period, or a packaging change creating damage exceptions. ## Sibling cards merchants should reference together The 7-day Prime miss rate is the leading indicator. Pair with these: | Card | Why pair it with Prime Miss Rate | What the combination tells you | | --------------------------------------------------------------------------------------------------------------------------- | -------------------------------------- | -------------------------------------------------------------- | | [SFP On-Time Delivery vs 99% Threshold](/nerve-centre/kpi-cards/amazon-prime-shipping/sfp-on-time-delivery-vs-99-threshold) | The 30-day SFP eligibility card. | This card leads it by 1 to 2 weeks. Use this for early action. | | [Late Shipments](/nerve-centre/kpi-cards/amazon-prime-shipping/late-shipments) | Absolute count, same 7D window. | Count vs rate views of the same data. | | [On-Time Delivery Rate](/nerve-centre/kpi-cards/amazon-prime-shipping/on-time-delivery-rate) | 30-day operational baseline. | This card is the 7-day version with tighter threshold. | | [SFP Eligibility Risk by ASIN](/nerve-centre/kpi-cards/amazon-prime-shipping/sfp-eligibility-risk-by-asin) | Per-ASIN view. | Identifies which products are dragging this rate. | | [OTD by Route](/nerve-centre/kpi-cards/amazon-prime-shipping/otd-by-route) | Carrier-and-zone split. | Identifies the underperforming cohort. | | Cross-connector: [`amazon.az_concessions`](/nerve-centre/amazon/az_concessions) | Concession costs scale with miss rate. | Direct financial cost. | ## Reconciling against the vendor's own dashboard **Where to look in Amazon Seller Central:** Seller Central → **Performance → Account Health → Prime Performance Dashboard** with 7-day filter. Closest like-for-like. **Why our number may legitimately differ:** | Reason | Direction | Why | | ------------------- | ------------ | ---------------------------------------------------- | | **Time zone** | Boundary | Amazon defaults PST. | | **Excluded events** | Either | Amazon excludes weather / customer-fault when filed. | | **In-transit** | Ours rolling | Excluded until POD. | **Cross-connector reconciliation:** | Card | Expected relationship | What causes legitimate divergence | | -------------------------------------------------------- | --------------------- | --------------------------------- | | [`amazon.amazon_otdr`](/nerve-centre/amazon/amazon_otdr) | Account-wide. | Includes FBA. | ## Known limitations / merchant FAQs **Why 7 days when SFP eligibility is 30 days?** Speed. The 30-day card lags by definition; you cannot intervene until you can see the trend forming. The 7-day window is what most ops teams use for daily standup-and-action; the card alerts you 1 to 2 weeks before the 30-day SFP card slips below 99%. **Above 1% is "warning"; what is "critical"?** The card uses a single >1% threshold. In Amazon's eligibility scoring, the practical critical threshold is sustained 2.5%+ over 30 days; that is when badge revocation begins. The 7-day card surfaces well before that. Treat 1.5% as the conversation, 2.5% as the emergency. **A single bad day pushes us above 1%; should we react?** Investigate but do not over-react. Single-day spikes happen for legitimate reasons (weather, depot strike, holiday-adjacent volume crunches). Look at the 7-day window context: is this single day or sustained 3+ days? Sustained patterns are real signals; single days are noise to investigate but not panic over. **Concession cost vs lost revenue: which dominates?** At 1 to 2% miss rate the Concession cost dominates ($5 to $10 × misses = direct out-of-pocket). At sustained 2.5%+ the eligibility risk dominates: badge loss = 30 to 50% Buy Box drop = revenue impact dwarfs Concession cost. **Can we exclude weather days?** File Seller Central case for weather events. Card includes all unless tagged. **Multi-warehouse SFP: this card pools all?** Yes. The card aggregates across all SFP-connected warehouses. Per-warehouse view requires per-warehouse filter; available in `ama_route_otd`. **Buy with Prime: same threshold?** Yes 1% miss rate triggers warning. Buy with Prime program team monitors with similar cadence to Amazon SFP. **Q4 peak realistic miss rate?** 2 to 4%. Most SFP merchants run 0.8 to 1.5% steady-state and 2.5 to 4% Q4 peak. Pre-plan: aggressive ZIP opt-outs in October, capacity-locked carrier agreements, possible seasonal SFP suspension. **The card flags but the SFP card is in spec; trust this one?** Yes. This card is the leading indicator. SFP card lags by 30-day window. When this card sustains above 1% for 3+ weeks the SFP card will dip below 99%; act on this card before that happens. *** ### Tracked live in Vortex IQ Nerve Centre *Prime 1-Day / 2-Day Promise Miss Rate* is one of hundreds of KPI pulses Vortex IQ tracks across Amazon Prime Shipping (SFP) 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.