How do you show failed setup message in configuration

[codechimp (Andrew Jackson)]

I’ve been looking at numerous integrations that show a failed setup, will retry message and I cannot work out how they are triggering this.
Can anyone give me a pointer in how to do this so I can throw these in my own integration when something’s wrong.

[msp1974 (Mark P)]

This comes from raising a ConfigEntryNotReady error when setting up. It needs to use the config flow UI setup method.

[codechimp (Andrew Jackson)]

Thanks, that fixed it