After trying and completing the steps from KB article
We are still receiving the same error message "SPC-INT-20074: Insufficient privileges on <Hostname>" during the installation of Spectrum 10.4.3. (20.2.7).
Release : 10.4.3
Component : Spectrum Core / SpectroSERVER
As a new requirement in Spectrum 10.4.3 onwards, the sudoers file needs to contain the specific hostname where Spectrum is being installed to.
Where spectrum is the Spectrum Install Owner account and spectrum01 is the hostname