AX2009 AP payment process

Have a few question in regarding to AX2009 AP payment process, we are in Sydney and we are using Westpac for banking

  1. I saw that the Payment ID and payment Reference fields in the payment journal, what are they used for ? and how are these fields got populated

  2. I am trying to set up EFT payment method to pay the supplier, via Westpac, what output file format I should choose, in the Banking set up ? What set up is required at the Vendor’s banking ?

  3. How can I set up WIRE payment ? not manual payment journal

Hope I can get some help, much appreciated