Authors name abbreviation APA 7

For some reason that i don't understand sometimes zotero automaticity inserts the first name abbreviation on the in text citations.
Sometimes is because I did some error on data, or haven't indicated which is the last name.
Still, sometimes it does this and I don't understand why. I suspect that is because maybe when there are two author with the same last name it automatically adds the abbreviation to differentiate them.
Does APA require this?
I don't have access to APA and haven't find in any free guide, so not sure if this is right, or if I'm doing something wrong.
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