Vendors submit invoices to the ordering State agency (see "Bill To" address on purchase order.) either when all items covered by the Purchase Order have been delivered or completed or, for partial payments as provided in the purchase order. Payment will not be considered for items not covered by the Order, for quantities (or monies) exceeding those authorized by the Order, or where unit pricing does not agree with the Order. Once billings have been reviewed and accepted, the State agency will forward the invoice to the State Controller, who will authorize payment through the State Treasury. Checks are mailed to the vendor's remit address or for vendors receiving payments through the ACH process, the assigned checking or savings account will be credited accordingly.