Self-Leveling Compound Over Adhesive?

I’ve been tearing out tile from a bathroom and am having trouble getting this black adhesive stuff (?) up from the concrete slab in some areas. It is almost tar-like. It is covered in some sort of black paper, which is also challenging to get up, but manageable with a little elbow grease and a razor blade floor scraper. In some spots the scraper just glides right over the adhesive and I can’t get it up. It is not raised very high; the floor looks flat when looking at it at eye level.

Would it be okay to just use self-leveling compound over the adhesive and call it a day? I was already planning to use it for this renovation anyway.

I’m not sure how to post pics, but I have one if anyone would benefit from seeing it!