Expiration date is the maximum period defined for making a payment. With Checkout Pro it is possible to change the default expiration date to cash payments by sending the
date_of_expiration field in the preference creation request.
To change the expiration date, send a POST with the parameter
date_of_expiration with the expiration date and time of the item to the endpoint /checkout/preferences and execute the request.
The date uses the ISO 8601 format: yyyy-MM-dd'T'HH:mm:ssz