Extension not found in context

sipp:load testing software was installe in one of the host(ip: executing this command “./sipp -sn uac -d 10000 -s 3000 asterisk board IP address) -l 10” ,i got an error " ‘chan_sip.c:22147 handle_request_invite’ ‘(’ to extension 3000 rejected because extension not found in context" in asterisk CLI command.normal call executed from 3000 to 3001 and vice versa but got an error when testing sip load


exten =>3000,1,Answer
exten=> 3000,n,Dial(SIP/3000,20)
exten=> 3000,n,Hangup()

exten =>3001,1,Answer
exten=> 3001,n,Dial(SIP/3001,20)
exten=> 3001,n,Hangup()

You have allowguest set to true and your SIP requests are matching any device in sip.conf.