PBX connected to another PBX via pjsip trunks

One question regarding this warning

[2022-07-16 21:37:24] NOTICE[14439]: res_pjsip/pjsip_distributor.c:676 log_failed_request: Request ‘INVITE’ from ‘sip:[email protected]’ failed for ‘<WAN_IP>:5060’ (callid: f4d418bf-e942-4cff-b069-c88e102e09d5) - Failed to authenticate

Since the PBX sending the request is behind a NAT, don’t I need to update the following fields?

I’m thinking about this thread but don’t know for sure if it also applies to me.