Hello chw_Weicloud, Here is a link to a KB that maybe of assistance. [URL]
HI I have create 2 site and both have vCenter 、 vRPA cluster 、plugin Server  when I connect to site  and try Protect VM I got error "vcServerUuid is marked [NAME] but is null" why ?   both vCenter is Version:7.0.1.00300 ESXi VMware ESXi, 6.7.0, 17167734 vRPA version:5.3.SP1.P1(m.148)   Site A     [IMAGE][IMAGE][URL] Site B [IMAGE][URL]   both site try Protect VM got error  [IMAGE][URL]    
rp4vm connect remote cluster cause error "vcServerUuid is marked @NonNull but 
is null"