The tag is present in Lintian version 2.104.234. That is the most recent version we know about.
This package includes a Python extension module, which uses Numpy via its binary interface. Such packages must depend on python3-numpy-abiN.
If the package is using debhelper, this problem is usually due to a
missing dh_numpy3 call in
Refer to /usr/share/doc/python3-numpy/README.DebianMaints for details.