post https://api-sandbox.pismolabs.io/statements/v2/accounts//installment-advance
Create an installment advance. An installment advance is a transfer of one or more installments from future cycles to the present cycle. For more information, refer to Manage installments on the customer statement.
Notes:
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If you need to update the principal amount in advance, use the Create installment advancement endpoint.
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This endpoint requires an account token - an access token encoded with a Pismo account ID. Tokens can expire quickly, which can result in a 401 Unauthorized message.