Hi Sasanka,
From the error it is very much clear that you are trying to install the certificate which is having more than one certificate in the chain.
You need to get the complete chain of certificate then apart from leaf certificate you need to copy intermediate (if it is there) and root certificate to the CA cert location then refresh the cache/ restart the server then try installing the certificate onto the TN.
Also on TN you need to install complete chain of certificate (i.e. first leaf then intermediate (if any) then root.)