Multiple Registratios In SLN City layout ( Doda Aladamara)

[IndianByHeart]

Hello all, I had a small piece of land registered in this Area Doda Aladamara. Since I am being out of country I did not look at it for long. Somehow I happen to tell my friend that, can you please go and have a look at it.
After taking time out from his busy schedule he gave a greate surprise that in this area there is a SLN layout, not sure if land I registered is in the layout. As per the assessment my friend told that, SLN city layout has the land which I registered in 2003.

I wonder what is the best source to get the authentic information. I do have all the documents even the tiny receipts from the land registration office. Even my another friend also has the land here registered even he has the documents. I do know few other also who got land here not sure how to get the reliable source of information around this. Also we have the documents with sellers pictures.

Also I wonder under what circumtances registration office could endup in multiple registrations?

Thanks in advance for information.