Issue while moving files using find command

Hi All,
I'm facing this below error when I move files using find command....Please help out......

$ find /home/aa/ab -mtime +90 -type f -exec mv -f {} /home/aa/ab/ac \;

mv: 0653-405 /home/aa/ab/ac/MP_060520111245.csv and /home/aa/ab/ac/MP_060520111245.csv are identical.

mv: 0653-405 /home/aa/ab/ac/MP_060820101450.csv and /home/aa/ab/ac/MP_060820101450.csv are identical.

Thanks in Advance,

Try:

$ find /home/aa/ab -wholename '/home/aa/ab/ac' -prune \
       -o -mtime +90 -type f -exec mv -f {} /home/aa/ab/ac \;

Hi

-wholename option is giving error as below:

$ find ./ -wholename ''/home/aa/ab/ac' -prune \
> -o -mtime +90 -type f -exec mv -f {} '/home/aa/ab/ac \;
find: 0652-017 -wholename is not a valid option.

Thanks in Advance