I am trying to generate another electronic payment and just received the following error when I try to do the export on the Payment Journal. 

On the line, in the fact box, will appear an error message if there is a problem with an export.  The information will appear in red on the line if there is an error.

By clicking on the blue link for the file error it tells use the Bank Payment Type should be Electronic Payment.

When using the suggest, you can use the show more and select the bank payment type when suggesting a batch.  You can assign the bank payment type to be created during the suggest process.