Troubleshooting Tip: Cannot edit certain replacement messages such as '504 DNS Look up failed'
| Description | This article describes a limitation when editing specific replacement messages for proxy policies on FortiGate, such as '504 DNS Look up failed'. |
| Scope | FortiOS. |
| Solution | Some replacement messages can be edited via FortiGate GUI or the CLI. These replacement messages can be verified under System -> Replacement Messages.
The replacement messages not displayed in this list cannot be modified.
A common example is the replacement message '504 DNS Look up failed', which is a default message: the user does not have the ability to modify it. |
