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You can place your application's client_id into the username field, and your client_secret into the password form field of the Authentication section of this documentation 👉.

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Payment Instruments are required for Real-Time (FedNow, RTP) and T+0 Same Day ACH payment flows. Please reach out to your Astra Integration Specialist for more information.

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There may be up to a 5 minute delay in calculating the true available balance of a payment instrument.

Retrieves all Payment Instruments for a Client.