I tried to change the ip of a wan link between a remote router and the main router. I did that and it seems to work. Then i ping and telnet to remote router and it was fine. Also i could ping the remote urers. Then the remote users called me and reported that they can not work in a program (database) locate near the main router.
After checking the problem i realised that on both link interfaces there was a crypto map with certain access-lists.
is that the problem?
How can i correct it?
If you remove the crypto map from the interfaces then whatever VPN was there would no longer function. Of course from your questions I believe that there is some possibility that it is not functioning (or not functioning completely) now. It would require more familiarity with your environment to know how much difference removing the VPN would make.
Knowing whether you need the crypto map in a private network with leased lines depends on what the requirements are within the private network. I can say that I recently did a project for a customer which was similar. It was within an enterprise network where the routers were connected by leased lines. Because of the type of data being transmitted the customer had a requirement that the data must be encrypted during transmission so we configured IPSec VPN with crypto maps on the interfaces to provide a VPN over the leased line connection.