[Wien] warning: !!! Bravais lattice has changed.

[sonusharma at iitmandi.ac.in]

Dear all

In doing the initialization of As element in the trigonal symmetry, space
group number is 166 with
a=b= 3.76 and c=10.5480
alpha and beta = 90 and gamma = 120 (Information from WWW-MINCRYST)
atomic positions are 0.0   0.0   0.226
 I am getting warning: !!! Bravais lattice has changed.
Space group has changed to 12 (C 2/m), while I have used 166 (R-3m) space
group.
Why I am getting this error.