Create Bill Payee

post https://example.com/client/web/Clients/{ClientNumber}/Payees/{Company}

Create a payee account for the associated ClientNumber making bill payments.

Valid VendorService values can be looked up from GET /{Company}/Retail/VendorServices
- NOT IMPLEMENTED
Valid VendorCode values can be looked up from GET /System/BillVendors/{Company}.
The corresponding VendorService is also included in this request

If the SequenceNumber field is provided in the request body it will be ignored
and a different sequence number for the payee is created.