> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sifr.sh/llms.txt
> Use this file to discover all available pages before exploring further.

# SIFR-RUST-CONFIG-0001: Rust interop decorator syntax is malformed.

> Rust interop decorator syntax is malformed.

`SIFR-RUST-CONFIG-0001` belongs to the **Rust interop configuration** diagnostic family. It means: rust interop decorator syntax is malformed.

## Why It Happens

Rust interop declaration or manifest configuration is invalid. Repair the Rust bridge configuration named by the diagnostic.

<Info>
  Use `sifr --explain SIFR-RUST-CONFIG-0001` locally to see the renderer's exact message template and any machine-applicable suggestions for the compiler version you are running.
</Info>

## Details

| Field                  | Value                                                                                      |
| ---------------------- | ------------------------------------------------------------------------------------------ |
| Code                   | `SIFR-RUST-CONFIG-0001`                                                                    |
| Family                 | `RUST-CONFIG`                                                                              |
| Severity               | Error                                                                                      |
| Stability              | stable                                                                                     |
| Owner                  | `sifr_lowering::lower::rust_interop`                                                       |
| Representative fixture | `crates/sifr_lowering/src/lower/rust_interop_tests.rs::rust_interop_rejects_string_target` |

See the [Error Codes index](/diagnostics/error-codes) for the complete catalog.