I'm trying to create a voicemail, but are getting error due to:

EXECUTE sofia/internal/4412345678@sip.nexmo.com bridge({absolute_codec_string='PCMU'}user/4487654321@my-domain.com)
2017-02-09 14:44:33.887109 [DEBUG] switch_ivr_originate.c:2138 Parsing global variables
2017-02-09 14:44:33.887109 [DEBUG] freeswitch_lua.cpp:365 DBH handle 0x7f047c0262f0 Connected.
2017-02-09 14:44:33.887109 [DEBUG] freeswitch_lua.cpp:382 DBH handle 0x7f047c0262f0 released.
2017-02-09 14:44:33.887109 [DEBUG] switch_ivr_originate.c:2138 Parsing global variables
2017-02-09 14:44:33.887109 [NOTICE] switch_ivr_originate.c:2841 Cannot create outgoing channel of type [error] cause: [USER_NOT_REGISTERED]
2017-02-09 14:44:33.887109 [DEBUG] switch_ivr_originate.c:3829 Originate Resulted in Error Cause: 606 [USER_NOT_REGISTERED]
2017-02-09 14:44:33.887109 [NOTICE] switch_ivr_originate.c:2841 Cannot create outgoing channel of type [user] cause: [USER_NOT_REGISTERED]
2017-02-09 14:44:33.887109 [DEBUG] switch_ivr_originate.c:3829 Originate Resulted in Error Cause: 606 [USER_NOT_REGISTERED]
2017-02-09 14:44:33.887109 [INFO] mod_dptools.c:3409 Originate Failed.  Cause: USER_NOT_REGISTERED

My dial plan is as follows:

    <condition field="${user_exists}" expression="^true$" break="never">

      <action application="set" data="call_timeout=20"/>

      <action application="set" data="hangup_after_bridge=true"/>

      <action application="set" data="continue_on_fail=true"/>

      <action application="bridge" data="{absolute_codec_string='PCMU'}user/${dialed_number}@${domain_name}"/>

      <action application="answer"/>

      <action application="sleep" data="1000"/>

      <action application="bridge" data="loopback/app=voicemail:default ${domain_name} ${dialed_number}"/>

    </condition>


So I guess the user should not be registered, as it is for voicemail.