IPsec between pfsense and linksys befvp41

[aloshiii]

Hello ,
i already created a tunne between pfsense and linksys befvp41 ,
but something goes wrong , the traffic can not be passed between the local addresses ,
and at logs of the pfsense i got this kind of errors which is says :
racoon: NOTIFY: couldn't find the proper pskey, try to get one by the peer's address.

thank you all .

[SeventhSon]

you need to make sure that the local identifier matches the remote on the other end and vice versa

[aloshiii]

@SeventhSon:

you need to make sure that the local identifier matches the remote on the other end and vice versa

please can you explain more about this "identifier"
thank you