qgis-errors-projections

Use when diagnosing CRS/projection errors, coordinate mismatches, or datum transformation issues. Prevents silent data corruption from wrong CRS assignment and coordinate order confusion. Covers wrong EPSG selection, lat/lon vs lon/lat, datum warnings, on-the-fly reprojection pitfalls, and fix patterns. Keywords: CRS error, projection error, wrong EPSG, coordinate mismatch, datum transformation, lat lon order, reprojection, layer in wrong place, coordinates swapped.