Note on purchase order item based on the Preferred Vendor

We are looking for a method to communicate to a vendor (Preferred Vendor) once the item has been manufactured to ship item(s) to a secondary vendor for embellishment. We would like to use the Special Order feature (auto-emailed to Vendor 1) for the Item however we are not aware of any static note for like Item / Preferred Vendor that is based on the items preferred vendor to communicate shipping to Vendor 2. It does not appear in the Item Record for the Preferred Vendor is customizable for a note like this.

Any ideas?

Thanks,

Mike Wondrasek