I don't get your comment elaborate please because I just realised you have been a mapper from last month with only 41 edits?

Okay, sometimes network is a bit slow so that could be the cause.

Thanks

Hi VictorIE I fixed that. That duplication happens sometimes I haven't figured out what causes it. At times I notice before closing and fix.
Thanks

Ohkay I checked again and I bet you are right and so I fixed it.

Thanks

HI Kartonage,
I sometimes come across that duplication when i run the validator after mapping. I will make sure i run the validator all the time to avoid causing errors for someone else. I really don't know what's causing the duplication.

Thanks for the heads up!