Post AP Payment to Invoice DivSite

Hi

I want to create a payment run in AX 2012 where the DivisionSite for the payment defaults to the DivisionSite that the invoice was raised against.

To create the payment run I go to Accounts Payable > Journals > Payments > Payment Journal and create “APPAY”

I go into ‘Lines’ and select ‘Create Payment Proposal’.  I select my payments, select transfer, then change status to ‘Sent’ (for testing purposes)

It sends me the error 'combination is not valid for the account structure balance, because it wants me to define a DivSite in Journal Names.  If I define a DivSite here it will post automatically, but I want it to post to the DivSite that the original invoice was posted too?
Can anyone help?