The key is to use the combination of BU type and company. So you could say to copy to all 'IS' type business units in company 00003, or all 'BS' type business units in all companies. If you just had a range to do within a company, and they didn't have a unique BU type, then you're stuck doing it manually.
One other option... I've never done it personally, but looks like it might work... from the P0901 take the row exit to Account by Object / Sub, then you should be able to cut/paste the basic account information and let the system assign the AID.