Context: https://e621.net/posts/3107595
Tag: tree
Reason: These are bushes, not trees.
Error: "tree tag is locked and can not be removed" (not quoted verbatim).
I didn't even know tags could be locked. Does this happen because someone tried to remove it, and the request was rejected, and then it was locked behind the scenes? I believe these are bushes, based on the lack of trunks or any shadows from overhead foliage.
For a little additional content, these are the tags I added:
{abstract_background, abstract_colors, bare_shoulders, barely_visible_nipples, bottomless, convenient_censorship, day, glistening_body, grass, green_body, green_sclera, green_skin, handle, hat_band, non_sexual_nudity, pupils, red_pupils, rock, shaded, shaded_face, shimmering, shoulder_length_hair, shrub, signature, sitting, sitting_in_bathtub, sitting_in_water, small_feet, sun_hat, sunlight, thick_thighs, toes, topless, water, water_reflection, wide_eyed}
Note: I did my best to double-check the accuracy of each tag before adding it. I just wanted to make sure the work is tagged well enough to be located again.