Before an AP Police mock, answer four different questions for any named place: where is it on the map, what present district contains it, what older district label may appear, and which river, site or activity makes it examinable? A fifth question asks whether the fact is static or needs a current update. This routine handles most district mistakes more reliably than a long unqualified list of one-liners.
The source register at the back gives the current 28-district directory, new-district notices and representative district portals. The geographic maps are derived from a current public AP disaster-management layer. They are for study scale and should not replace statutory boundary notifications or revenue records.
Worked example: Build a final comparison sheet with four columns: current district, headquarters, older parent label and one exam anchor. Put a date on every border-sensitive answer. Rehearse pairs that look alike—Krishna/NTR, East Godavari/Kakinada/Konaseema, Kurnool/Nandyal and Prakasam/Markapuram. A short source note beside each unusual headquarters prevents an old map from overriding a current fact.
Active recall: Explain in one sentence why '26 districts' and '28 districts' can both be correct only when dated.
Four-question district method
Location, current district, older label and examinable association.

Read this visual
For any district claim, ask location, current headquarters, older label and one sourced association. Numbers additionally need a boundary vintage.
Current district geometry: APSDMA. Current district names and headquarters: credited official directories and portals.