Proficient Stack Get the kit
/ Amazon SP-API

Finances v0 is being switched off.

On 28 August 2026 Amazon removes the Finances v0 API. If your reporting still calls it, your payouts stop reconciling the day it goes dark. I migrate you to listTransactions and make every fee, refund and reserve tie out to the payout — cleanly, by text, no calls.

#5353 Reconciliation approach validated publicly by Amazon — issue #5353, amzn/selling-partner-api-models.
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v0 removed
28 Aug 2026

If your reports don't tie out to the payout,
you're guessing.

# settlement — the fees v0 never mapped cleanly
payout        31.55
order 701-…   34.85
ServiceFee   -3.30  no AmazonOrderId ← the gap
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reconciled  31.55  ties out ✓
Free
/START FREESee where you stand before you spend a cent. All three run in your browser — nothing is uploaded.
Free · Browser

v0 Scanner

Paste your integration or point it at your code — it flags every Finances v0 call that breaks on 28 Aug, with the listTransactions replacement for each.

Run the scanner →
Free · Browser

Settlement Reconciler

Upload a settlement report and it reconciles payout vs line items client-side — catching the fees with no order id that quietly break the total.

Reconcile a report →
Free · Guide

Finances v0 Field Guide

The full v0 → listTransactions field map, the reconciliation edge cases, and the removal timeline — the reference I use on real migrations.

Get the guide →
Kits
/DO IT YOURSELFTested, drop-in code with the edge cases already handled. For teams that just need the migration done right.
Kit
€49

SP-API Migration Kit

Working listTransactions client, a v0 → new field mapper, a reconciliation checklist and a runnable example that ties a payout to the cent — including the fee-with-no-order-id case.

Get the kit →
Kit
€39

Settlement Report Parser

Parses the flat-file settlement report into clean, typed rows — payout total, balances, per-type breakdown and the unassociated fees — ready to reconcile in your own stack.

Get the parser →
Not sure which?

Start with the scan

Run the free scanner first. It tells you exactly how much of your code touches v0 — then the kit above closes the gap. Still unsure, just message me.

Ask me →
Service
/DONE FOR YOUI run it end to end, under your brand if you're an agency. Fixed scope, fixed price, by text.
Start here · paid audit

Reconciliation audit — €90, back in 48h

Not ready to commit to a full migration? Send me one settlement report and your v0 exposure. I send back, in writing, exactly where your numbers stop tying out and what the cut-over breaks — the fees with no order id, the payout-level gaps. If you then go done-for-you, the €90 comes off the price.

€90
Book the audit
Migration · reconciliation

Finances v0 → listTransactions

I migrate your integration before the deadline and prove it reconciles against real payouts, not a demo.

  • Every v0 call replaced and tested
  • Fees, refunds, reserves tied to the payout
  • The edge cases Amazon validated on #5353
  • Handed over documented — white-label optional
Recovery · audit

FBA Reimbursement Recovery

Amazon owes most sellers money — lost or damaged inventory, wrong-dimension fees, return errors. I find it by reconciliation and you file within Amazon's own process.

  • Reconciliation first — evidence, not guesses
  • Inside SAFE-T / fee investigation, 18-month window
  • Honest: 2026 pays manufacturing cost, not retail
  • Nothing gamed — claims that survive review
v0 removed 28 Aug 2026

Send me one
settlement report.

Tell me your SP-API setup and one payout that looked off — I'll tell you, in writing, where it stops reconciling. Then we fix it before the deadline.

Email me