If this error occurs, there may be a problem with linking with other services such as YouTube:
- Check the status page of each service to see if there are network issues.
- Restart your PlayStation®4 console.
- Unlink the account and link it again from Settings > Account Management > Link with Other Services.
- Turn off your router, wait at least 5 minutes, then restart it.
- If you have another account that can be linked with PlayStation™Network, please check to see if that account can be linked without any issues.