Import Task for recipient User getting failed

[kakaderanjit53]

Hi Qlik Experts,

I am importing the recipients user task with Filter and groups,It succeed when no. of user upto 3 ,but after updation of excel file of

import recipients with increased number of recipients,the same task getting failed and showing the error,

"

ERROR message : importing USER : Can not create the new user because their email is already in use.

ERROR message : The import failed due to some invalid entries. No data was saved."

Give me solution for resolving this problem,ASAP;

Thanks and Regards,

RANJIT KAKADE.