Hi, have you tried using the AnchoredSnapper? AA would be the Anchor and PD would be the candidate. I think Segment Snapping is the Snapping Type you want. You might have to play around with the Snapping Distance (maybe even increase snapping distance step by step) since it looks like there are some tricky geometries in there.

Thank you very much ..willl try this

I tried it but this is giving some false result. Shall i copy the shapefile to work here ?