Unfortunately, searched the forum but couldn't find any similar question. I have an O365 tenant and purchased some licenses from an Official MS reseller. I wanted to buy some other licenses from a different reseller. I read the procedure and know how to proceed. My question is once I have available the licenses from the second reseller how will I know which license belongs to whom reseller. E.g. Let's say I have 5 E3 licenses from vendor A and 10 E3 licenses from vendor B. I am creating a new user and want to assign him an E3 license. Can I somehow choose the pool of licenses provided by Vendor B?