The tag is present in Lintian version 2.104.262. That is the most recent version we know about.
This line in the LSB keyword section of an
script doesn't match the required formatting of that section. Note that
keyword settings must start with
#, a single space, the keyword,
a colon, and some whitespace, followed by the value (if any). Only the
Description keyword allows continuation lines, and continuation lines
must begin with
# and either a tab or two or more spaces.
Refer to https://wiki.debian.org/LSBInitScripts for details.