Once transaction is completed, update Sezzle order with merchant reference ID
Documentation Index
Fetch the complete documentation index at: https://docs.sezzle.com/llms.txt
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The authentication token generated from providing API Keys to Sezzle Gateway
The Order UUID to update (order.uuid from session response)
The checkout or cart ID from the merchant, currently used for tracking only (must contain only alphanumeric characters, dashes (-), and underscores (_))
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