BPC 7.5 error: #ERR: Duplicate dimension across axes-Dim:VERSION

Hi,

I am working on a 7.5 report and getting errors.

I have hardcoded column key range as client want specific combination of DIm on column axis. e.g.

Coulmn A: Version A, Datasrc A and Time A

Coulmn B: Version B, Datasrc B and Time A

Column C: Version A, Datasrc C and Time B

I have 2 DIM on row axis, User Defined and Account

I have selected" No Expand" for member set for Column expansion.

The error that I am getting is;

#ERR: Duplicate dimension across axes-Dim:VERSION

Please help!