https://gwws.greywolf.com/p21/ws.aspx?APIKey=APIKEYHERE&result=json&v=1&api=SalesCustomerInvoiceList&company_id=&customer_id=&sales_location_id=&po_no=&brs-b-invoice_date=&brs-e-invoice_date=&brs-b-mod_date=&brs-e-mod_date=&corp_address_id=&filter=