Background: I have a farm with 2WFE,2App and 1 DB server. I installed SharePoint 2013 Trail version on machines and then installed Project Server 2013 on top of it. I have installed SP1 and December 2015 CU of both SharePoint and Project servers on all machines respectively. Everything is working fine.
Problem: I purchased both SharePoint and Project Server License keys from Microsoft and when I tried to put the SharePoint Server 2013 key in Central Administration > Upgrade and Migration > Convert License Type it shows Project Server 2013 instead of SharePoint Server 2013 Trail Version. When i tried to provide SharePoint Server 2013 Key, it refused to accept. I put Project Server 2013 key, it accepted but now showing nothing against Current License. The Enter The Product Key box is also disabled.
Any idea to convert SharePoint License? I am afraid it will expire after the trail period as it never accepted the SharePoint license key i provided.