Release Notes

August 1, 2025

August 1, 2025 Karbon API release adds the ability to reverse a manual payment

Reverse a manual payment

If a Manual Payment has been recorded and needs to be reversed, you can now request this by calling

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/v3/ReverseManualPayment
. This will return a 204 on successful reversal.

For example, to reverse the manual payment with the

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PaymentKey
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2NmwhRJXjHdH
effective on the August 4, 2025 - make a
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POST
request to
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/v3/ReverseManualPayment
with the JSON payload:

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{ "PaymentKey": "2NmwhRJXjHdH", "ReversalDate": "2025-08-04" }

Refer to the API documentation for more information on creating and reversing manual payments.