This is usually a dashboard UI caching issue where the backend drops the volume, but the state stays cached in your browser session.

Here are a few quick ways to resolve or clear it:

• Hard Refresh / Clear Cache: Perform a hard refresh (Ctrl + Shift + R or Cmd + Shift + R) or open the project in an Incognito window to force a fresh API fetch.
• Railway CLI: Force-delete the volume directly via the terminal by linking your project and running:

railway volume delete 8a08dcda-0101-4c0e-bac9-1ed945efb5b8

• Railway Support: If the volume persists in the CLI as well, open a quick ticket via the Help button on the bottom left so a member of the Railway engineering team can prune the dangling metadata record on the backend.