Question: Where do I get my MPN ID

Question: Where do I get my MPN ID

Answer: To get your Partner MPN ID navigate to Microsoft Partner Center. Click Partner Center and enter your login credentials.

Click on the gear icon and select Account settings.
From the left navigation menu, click Identifiers.

NB: You need to have a valid MPN ID to order a subscription 

You also need to be registered as an indirect reseller. 
Follow these steps to register as an indirect reseller: https://learn.microsoft.com/en-us/partner-center/enroll/enrolling-in-the-csp-program