Got SIP response 489 "Bad event" back from 212.xxx

Hello

Each time when i restart the Asterisk Server i get the following error message

Got SIP response 489 “Bad event” back from 212.xxx.xxx.xxx

212.xxx.xxx.xxx is meaning the ip-address of the sip provider.

Could someone help me to solve this problem? I don’t have idea what is causing this problem.

Thanks in advance

Ramon