Realtime endpoints: Could not create dialog to invalid URI

Hi there,

I have a vm running with a Realtime setup of Asterisk.
As follows you see my two endpoints are successfully registered:

  == Contact moritz/sip:moritz@172.30.51.86:40034;transport=UDP;rinstance=125d0264e5af958f has been deleted
  == Endpoint moritz is now Unreachable
    -- Added contact 'sip:moritz@172.30.51.86:40034;transport=UDP;rinstance=125d0264e5af958f' to AOR 'moritz' with expiration of 60 seconds
  == Endpoint moritz is now Reachable
  == Contact nobby/sip:nobby@172.30.51.86:56331;ob has been deleted
  == Endpoint nobby is now Unreachable
    -- Attempted to remove non-existent contact 'sip:nobby@172.30.51.86:56331;ob' from AOR 'nobby' by request
  == Endpoint nobby is now Reachable
    -- Added contact 'sip:nobby@172.30.51.86:56331;ob' to AOR 'nobby' with expiration of 300 seconds

I have added 2 extensions to the mysql extensions table:

1	from-internal	6001	1	Dial	PJSIP/nobby
2	from-internal	6002	1	Dial	PJSIP/moritz

Now when I try to dial 6001 from my endpoint moritz I get following errors and can not figure out why that happens and why the URI is not valid:

[Oct 21 08:38:45] ERROR[4695]: res_pjsip.c:3533 ast_sip_create_dialog_uac: Endpoint 'moritz': Could not create dialog to invalid URI 'moritz'.  Is endpoint registered and reachable?
[Oct 21 08:38:45] ERROR[4695]: chan_pjsip.c:2649 request: Failed to create outgoing session to endpoint 'moritz'
[Oct 21 08:38:45] WARNING[4713][C-00000001]: app_dial.c:2578 dial_exec_full: Unable to create channel of type 'PJSIP' (cause 3 - No route to destination)
  == Everyone is busy/congested at this time (1:0/0/1)
  -- Auto fallthrough, channel 'PJSIP/nobby-00000000' status is 'CHANUNAVAIL'

Can you please help?

Thanks in advance

A change from odbc-connector directly to mysql (via. res_config_mysql.conf) fixed it somehow.