Is the constraint (and the warning) wrong or is it your statement?
I'm pretty sure this is the second. The ideal category should be "Category:Cows in heraldry" not "Category:Heraldic figures" (which is already use on https://www.wikidata.org/wiki/Q3744866 ).

Cheers, ~nicolas

Le mer. 27 févr. 2019 à 19:02, Thad Guidry <thadguidry@gmail.com> a écrit :
When dealing with Wikipedia Categories and placing statements about a "topic's main category" P910
on a symbolic representation topic of "cow" here https://www.wikidata.org/wiki/Q4007160

A Potential Issue appeared today that puzzled me:
"Category:Heraldic figures" should also have the inverse statement "category's main topic `cow`"

Category:Heraldic figures is much more about just "cow's".  And so I wouldn't want to say that the category's main topic is "cow" !
I would think that many categories "could" always be about many things, and so this inverse property constraint on P910 seems overly protective and also seems to be encouraging users to add bad, erroneous information.

So, I wonder if this constraint should be removed or special cased somehow somewhere or at some level elsewhere?

See attached screenshot.

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