asset value date in Internal order settlement ko88

Hi.

I have posted some expenses to the internal order. I m trying to settle it to AUC with tcode KO88.

In the selection screen of ko88 i gave asset value date as 15.07.2011 but system is posting with month end date only as 31.07.2011.

I read the sap note 98496. In that its mentioned that the asset value date given in settlement parameters will override the asset value date given in the selection screen of ko88.

I tried to update the AUC asset value date in KO02 where we give settlement rules but i couldnt find any field there.

Where do i update the AUC asset value date in settlement parameters. Can anyone provide me the tcode and the field where i update this asset value date.

Regards,

Padmavathi