# E0047

Warning name: `invalid_mbti`

Invalid mbti file.

This warning name is kept in the warning table for invalid `.mbti` files, but
the current interface parser reports syntax errors in `.mbti` files as
[`E3100`](E3100.md).

If you see an invalid interface warning from a tool that still uses this warning
entry, regenerate the `.mbti` file (or fix the tool that produced it) so that
the interface matches the current compiler version.

This page has no checked source example because current invalid `.mbti`
diagnostics are documented and monitored under E3100.