Creating user from template in powershell - Server 2012 R2

i've been research online how create user template in powershell , far can't work. here i'm using:

$instance = get-aduser –identity template_user    new-aduser –samaccountname test_scripts –instance $instance –name “test scripts” –enabled:$false

i'm getting error saying operation failed because upn value not unique.  this strange error me, because saying "-instance" account.  but of course 1 isn't unique.  that's template.   if remove "-instance $instance" code, works fine , creates account, not template, obviously.

any ideas?  below entire pasted error.

new-aduser : operation failed because upn value provided addition/modification not unique forest-wide
@ line:1 char:1
+ new-aduser –samaccountname test_scripts –instance $instance –name “test scripts” ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + categoryinfo          : notspecified: (cn=test scripts...domain,dc=com:string) [new-aduser], adexception
    + fullyqualifiederrorid : activedirectoryserver:8648,microsoft.activedirectory.management.commands.newaduser

hi,

you'll need supply unique upn new user adding in -userprincipalname parameter.

http://ss64.com/ps/new-aduser.html

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