Certificate of service for ipcc examination

I have a doubt about my certificate of service. I have recordically completed my articleship on january 31 st 2020.. And i have also done all procedures relating to articleship completion. My extention days of 75 days are also pending.. Because l want likely to do my extension under another principal.. Iam not pass ipcc till yet.so here my doubt is to who will sign my certificate of service for ipcc examination registration.. Im from direct entry student Ipcc old..