Hello jonathan maan, 
Welcome aboard and happy to see you people mapping IIT BHU in such details. I just want to highlight that
"advertisement board iit bhu" can't be marked as natural=wetland (https://wiki.openstreetmap.org/wiki/Tag:natural=wetland) because the building/POI isn't a wetland. Please add appropriate tags.

You can always consult OpenStreetMap wiki for finding the relevant tag https://wiki.openstreetmap.org/wiki/Main_Page

Cheers!
sahilister