Map and scores
A PIN code is India Post’s postal identifier. The map is a geographic view. They overlap but they are not the same object. Listings use PIN code for search; scores use coordinates.
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A PIN code is assigned by India Post for mail. People in India search Properties, Services & Businesses, Local Products and Local Jobs by PIN code, city or locality. Confirm a PIN on India Post’s own enquiry if a post looks wrong. MyStreetBiz does not invent PIN boundaries.
The public map is a coordinate view: you click or search a place, then see layers and scores for that point. Address lookup uses OpenStreetMap Nominatim (geocoding, not the map tiles). Nominatim can rate-limit or refuse heavy use. That lookup is not a cadastral survey.
Do not treat a PIN code as a Location Pillars score, or a map pin as legal title.