Configure split payment accounts for each sub-merchant in Adyen's Balance Platform or Marketplace account structure
On each payment request, include a split object defining the amounts to route to the platform commission account, the sub-merchant liable account, and any fee accounts
Ensure split amounts sum to the total transaction amount; Adyen will reject the request if splits do not reconcile to the total
Listen for the PAYOUT_SCHEDULED and PAYOUT_PAID transfer webhook events on each balance account to track when funds are sent to sub-merchant bank accounts
Handle failed payouts by inspecting the failure reason in the webhook; common causes include invalid IBAN, account closure, or AML holds
Reconcile settlement using Adyen's settlement detail reports, matching each split record to your internal sub-merchant ledger
Known gotchas
Split configurations must be set at payment time; you cannot retroactively change fund routing after a payment is authorized
Sub-merchant KYC and onboarding requirements must be completed in Adyen's system before payouts can be made to that account; incomplete KYC will block payouts
Cross-currency splits require explicit handling; if the payment currency differs from the payout currency, ensure FX conversion is configured correctly at the balance account level
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