I'm trying to share my customer account Globally:
I have two stores :
I want to add functionality that if customer register any of the store can have access to login any store with same details.
To activate this made some changes in
admin panel > system > configuration > customer configuration > Account Sharing Option > Share Customer Accounts > Global.
After changing the setting to Global when i click on save Config button i got below error :
Cannot share customer accounts globally because some customer accounts with the same emails exist on multiple websites and cannot be merged.
Why i am getting this error ? Suggest me the solution for this issue.