ENGINE_CONVERSION_REQUIRED
What it means. This app uses a database engine the platform does not host.
What to do. Postgres is the platform database. Convert the data layer to Postgres (keep the ORM, change the provider/dialect and any engine-specific SQL), then re-run deploy. If you must keep SQLite, no change is needed: it will run on the stateful tier.
- HTTP status: 422
- Retryable after applying the fix: yes
Every failure from the CLI or an MCP tool has this shape:
{
"ok": false,
"code": "ENGINE_CONVERSION_REQUIRED",
"message": "This app uses a database engine the platform does not host.",
"fix": "Postgres is the platform database. Convert the data layer to Postgres (keep the ORM, change the provider/dialect and any engine-specific SQL), then re-run deploy. If you must keep SQLite, no change is needed: it will run on the stateful tier.",
"file": "<where to edit, when known>",
"retryable": true,
"docs": "https://docs.uarpie.app/errors/ENGINE_CONVERSION_REQUIRED"
}
Apply fix (edit file when it is given), then run the same command again.