Plz enlighten

Dear All,

please enlighten me on this aspect of litigation -

if the High Court mistakenly appoints a person as a valuer of some property treating him as a C.A. but as a matter of fact, that person has renounced his CA authorisation and is  not entitled to sign as a CA, then which application should be made to the HC for rectification of the said Order.

will it be u/151 CPC?

also, what should be the format of the application since that person must be the applicant then how it should be made.

Please enlighten.