Why might a 404 error occur when working with Asterisk?

Question

Asterisk

All exhausted already. I can't find the reason for the error. In general, this error occurs when sending a message. But I think the problem is somewhere deeper. Here are the logs:
Name/username Host Dyn Forcerport Comedia ACL Port Status Description
1000/4a8e8psj 127.0.0.1 D Yes Yes 52023 OK (172 ms)
1001/4r14auqo 127.0.0.1 D Yes Yes 52022 OK (41 ms)
2 sip peers [Monitored: 2 online, 0 offline Unmonitored: 0 online, 0 offline]
Really destroying SIP dialog 's7v7r6t65icvhdn5isg3sm' Method: REGISTER
<--- SIP read from WS:127.0.0.1:52023 --->
MESSAGE sip:[email protected] SIP/2.0
Via: SIP/2.0/WS 2dq9hpuhph5o.invalid;branch=z9hG4bK6162690
Max-Forwards: 69
To: sip:[email protected]
From: "alice" sip:[email protected];tag=nkg1etm1ec
Call-ID: 59tu38la47khegqqca9g CSeq
: 3830 MESSAGE
Content-Type: text/plain
Allow: INVITE,ACK,CANCEL,BYE,UPDATE ,MESSAGE,OPTIONS,REFER,INFO
Supported: outbound
User-Agent: JsSIP 3.0.7
Content-Length: 6
hi bob
<------------->
--- (12 headers 1 lines) ---
Receiving message!
Looking for 1001 in messages (domain 127.0.0.1)
<--- Transmitting (no NAT) to 127.0.0.1:5060 --->
SIP/2.0 404 Not Found
Via: SIP/2.0/WS 2dq9hpuhph5o.invalid;branch=z9hG4bK6162690;received=127.0.0.1
From: "alice" sip:[email protected];tag=nkg1etm1ec
To: sip:[email protected] 0.1;tag=as005ae3d2
Call-ID: 59tu38la47khegqqca9g CSeq
: 3830 MESSAGE
Server: Asterisk PBX 13.15.1
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Content -Length: 0
UPD: It's all about the mask in the extensions.conf file. See comments on 1st answer)

Answer 1

I've already seen something similar... add permission to messages in the configuration file and in dialplan you need to file the context for messages.