Clarify top level register error
Clarify top level register error

Zirpon/tchannel,sasa233/tchannel,i/tchannel,bunnyblue/tchannel,vanloswang/tchannel,i/tchannel,savaki/tchannel,RyanTech/tchannel,hustxiaoc/tchannel,chenwenbin928/tchannel,Zirpon/tchannel,hustxiaoc/tchannel,chenwenbin928/tchannel,i/tchannel,benfleis/tchannel,benfleis/tchannel,savaki/tchannel,hustxiaoc/tchannel,RyanTech/tchannel,savaki/tchannel,RyanTech/tchannel,vanloswang/tchannel,bunnyblue/tchannel,sasa233/tchannel,benfleis/tchannel,chenwenbin928/tchannel,Zirpon/tchannel,vanloswang/tchannel,bunnyblue/tchannel,sasa233/tchannel