Hello,
Well RC is what the authenticated record
Ideally there should not be any mis-match in Parivahan app too as its sourced through punched data in software only, but as you observed same you can report back to Parivahan Customer care on
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or call them on 0120-2459168
In meanwhile suggest to also check on Vahan site for details by ;punching in vehicle registration number
https://vahan.nic.in/nrservices/faces/user/searchstatus.xhtml
Hope should help !!