I am trying to perform 3SLS with fixed effects in stata 16 and the command I put in is accepted and no error is given. However it does not give me any results? Please can someone help me get these results or amend my command so it gives me them.

current command

xi reg3 (y = x1 x2 x3 x4 x5 x6 i.id) (x1=z1 i.id) (x2=z1 i.id) (x3=z2 i.id) (x4=Z3 i.id)

where x1,2,3,4 are endogenous, x5 and x6 exogenous, z are instrumental variables (x1 and x2 use same instrument as they are WGIs instrumented by the log of the European settler mortality rate)

any help would be appreciated