post https://api-test.maast.com/pg/auth
Authorizes a credit card for capture at a later time. An authorized transaction will continue to be open until it expires or a capture message is received. Authorizations are automatically voided if they are not captured within 28 days, although most issuing banks will release the hold after 24 hours in retail environments or 7 days in card-not-present environments.
Note: Vendor accounts need special permissions to use this operation; contact Maast Support to enable it.