How do I rectify "Could not authenticate user for SCM viewer"?

This can be caused by changes made in the SCM integrations. To fix, check the port settings (by default, Soap Service Port:7080) in Admin > Integrations > SVN

If this does not work, check the httpd.conf file.

Replace the localhost with the application server name in the below block:

 RewriteEngine on RewriteRule ^/integration/(.*)
                http://localhost:7080/integration/$1 [P] ProxyPassReverse /
            http://localhost:7080/ 

like this:

RewriteEngine on RewriteRule ^/integration/(.*)
                http://xyz.com:7080/integration/$1 [P] ProxyPassReverse /
                http://xyz.com:7080/