When using the Concur Invoice connector, you will need to setup the default banks.  If you have multi-company enabled, you will need to enter a default bank for each company you will be processing Concur Payment Requests in.  To do this, you will navigate to Blackbox Connector Config in Vision, and then select the Concur Config tab.  There you will find the Concur Company Paid as AP Defaults grid, where you will insert a default banks, default liabilities, and default vendors.  Click Save when you are finished.  If you received and error on an invoice in the Concur Utility regarding not having a default bank assigned, you can go back to the Concur Utility after completing the above steps, and repopulate the transaction center, which will apply the changes you made, and alleviate that error. If you do not see the bank you are looking for in the dropdown, you may have to press the 'Populate Config and Update Fields' button on the Concur Mapping tab, and then reload the infocenter.