Context sensitive DFF in iProcurement reqiusition line level

Hi,

I defined a context sensitive DFF at the requisition line level ( Requisition Lines DFF) . I used CATEGORY_ID as a reference field. And then I defined the DFFs for two category IDs and complied.

However this works only on the standard oracle requisition form,but not on the iprocurment forms! and I get the below error message.

"The following required field does not have a value: Context"

Please explain why I get this error?  I have even bounced the apache server.

Thanks and Regards,