The help doc linked is WRONG. As of the time of this post, here is what I found.
The "Legal Info" is not the right place to look. It is in "Identifiers", but... only after certain criteria is met! You have to know and do the following:
- MPN ID is no longer named such, it's now called a Partner ID
- MPN is no longer called Microsoft Partner Network, it is now called "Azure AI Cloud Partner Program"
- Having a Partner Center account is not sufficient, you must also go to Account Settings/Programs, and specifically add the "Azure AI Cloud Partner Program"
- Partner ID is now accessible in Account Settings/Identifiers/Azure AI Cloud Partner Program
- You will probably notice TWO Partner IDs. You need the one of type PartnerGlobal
- HOWEVER... You still cannot add this ID to your app registration! First, you MUST:
- Go to Account Settings/Tenants
- IMPORTANT: if you are in multiple programs, you might see multiple tabs at the top, such as Partner | Developer. Chose the tab/program you want to actually associate your app with (the Entra that has your app registration)
- Now click "Associate Microsoft Entra ID" to link your other tentant in here.
See also my answer on this issue, if you have trouble on step 9 associating your Entra tenant:
https://learn.microsoft.com/en-us/answers/questions/1118699/how-to-get-mpn-id-for-multi-tenent-app