Rescore a Beneficiary
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Create an Instrument for a BeneficiaryAttach a payment instrument to a beneficiary. The credentials you submit
(bank account numbers, wallet addresses, card PANs) are tokenized in Basis
Theory on receipt — Anton's core database stores only a token reference, a
display-only masked value, and a content fingerprint used for cross-merchant
deduplication.
The request body shape depends on the `method` — each method has a distinct
credential schema. See the [Instruments methods endpoint](#tag/Reference-Data/operation/listPaymentMethods)
for the full per-country method catalog.
Requires an `Idempotency-Key` header.
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