From packages.debian.org :
dep: perlapi-5.30.3
virtual package provided by perl-base
And on my server :
root@mail:~/iRedMail-1.3.1# apt install perlapi-5.30.3
Reading package lists... Done
Building dependency tree
Reading state information... Done
Note, selecting 'perl-base' instead of 'perlapi-5.30.3'
perl-base is already the newest version (5.30.3-4).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Roelof