Default Price Ladder at Item level

Hello,

According the RPO implementation RPO Guide - Release 15.0 - is necessary to load the default price ladder at item level (Item Default Price Ladder Assignment File) - measure ol1itpcldr.

However, the RPO application, in Business Administration > Price Ladder Management > Merchandise Price Ladder Assignment, can not set the Price Ladder at the item level. The lower level than the application allows is category.

Is there any way to set the price ladder in the application at the item level?

Thanks

Jackson Uhmann