WARNING Unable to create request with auth. No auth credentials for realm(s)

I have a problem with my ISP, as it looks, can it be due to the access data that I use for my SIP account or is it the wrong realm?

[Jan 31 14:18:03] WARNING[11482]: res_pjsip_outbound_authenticator_digest.c:178 digest_create_request_with_auth: Host: '62.52.28.195:5060': Unable to create request with auth. No auth credentials for realm(s) 'ims.telefonica.de' in challenge.
[Jan 31 14:18:03] WARNING[11482]: res_pjsip_outbound_registration.c:933 handle_registration_response: Failed to create authenticated REGISTER request to server 'sip:sip.alice-voip.de' from client 'sip:sip_id@sip.alice-voip.de'
[Jan 31 14:18:03] WARNING[11482]: res_pjsip_outbound_registration.c:1006 handle_registration_response: Fatal response '401' received from 'sip:sip.alice-voip.de' on registration attempt to 'sip:sip_id@sip.alice-voip.de', stopping outbound registration

Most likely wrong realm. You’d need to provide the actual configuration in use. As well you generally don’t need to specify the realm in the configuration.