Video refused for "data issues", what does it mean ?

Hello everyone, 

I'm doing flag videos and posting them on Adobe Stock, and some of them (not all) are being rejected for "data issues" (the website isn't in english, so sorry if it's not the right term). It tells me that either the title or keyword are wrong, but I don't really see what's causing the issue. 

My keywords and title are in english, they match the theme of the video...

Any idea ? 

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