Now I have data like:
hhid geo
1 1
1 1
2 2
2 2
3 3
3 3

And I use command "xtset hhid geo", there is a error that "repeated time values within panel".
I know this is because hhid is repeated, but I don't want to use "duplicates drop hhid geo, force" because I will lose half of data. hhid means "household id", so even though the hhid are same, the persons they represent are not same.
In this case, how can I fix this error without delete any data?
I'm looking forward to your help, thank you!