Downpayment posting against an Asset PO

Hi

We are trying to post a down payment for the vendor converting from a down payment request.

This is with reference to a PO created for an asset purchase with internal order integrated.

Now when the transaction is run through F110 we are getting error "No account has been entered for down payment posting for the asset class in the account assignment key 6100".

The line item posted for the downpayment request contains the PO number and order number. No asset number is there.

We don't want to capitalize the down payment posted against the asset.

How can we avoid this error ?

(The field status group for the vendor recon account is suppressed for Asset and sub-number).