License number has the same format for all products and consists from the three parts. The first part is the product identifier: PPA for Plesk Automation, OAE for Odin Automation Essentials and HSPC for OBAS. The second eight digits part is unique license number. And the four digits third part is the number that indicates how many times the license was updated, upgraded and renewed.
It is always important to know the full license number if you contact Odin support. How to find the license number for Odin products is described in the articles below: