Why does `mandb` raise `Invalid argument` warnings due to missing `iconv` tables ?

Solution Verified - Updated -

Issue

If man pages on the system attempt to utilize the ISO 8859-2 charset the and the glibc-gconv-extra package is not installed, executing the mandb -c command results in the Invalid argument warnings due to missing iconv tables.

Environment

Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9

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