Duplicate entries Check

[sur]

Hello All,

Need to create a format or validation check, when updated new entry.

[TABLE="width: 350"]
<colgroup><col span="4"><col></colgroup><tbody>[TR]
[TD]Item[/TD]
[TD]Bng[/TD]
[TD]Chn[/TD]
[TD]HYD[/TD]
[TD]Remarks[/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD]Yes[/TD]
[TD]Yes[/TD]
[TD]Yes[/TD]
[TD] [/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD] [/TD]
[TD]Yes[/TD]
[TD]Yes[/TD]
[TD] [/TD]
[/TR]
[TR]
[TD]1[/TD]
[TD] [/TD]
[TD]Yes[/TD]
[TD] [/TD]
[TD]Already Exists[/TD]
[/TR]
[TR]
[TD]2[/TD]
[TD]Yes[/TD]
[TD] [/TD]
[TD]Yes[/TD]
[TD]Already Exists[/TD]
[/TR]
</tbody>[/TABLE]

 

[footoo]

https://www.google.com.hk/search?sa...b..0.4.232...0i13k1j35i304i39k1.0.dcpOScvp74g

https://www.google.com.hk/search?sa...30k1j0i13k1j0i8i13i30k1j33i10k1.0.YDTnVG5KjUc

 

[LFKim2018]

https://www.google.com.ph/search?ei...10i30k1j33i22i29i30k1.0.sizEk4VJeAo#kpvalbx=1