# validate_asset_uniqueness_resolver · FT4 Rell API · Chromia Docs (concept)

> function validate_ asset_ uniqueness_ resolver(res: byte_ array) Ensures that the asset uniqueness resolver is at most 1024 bytes long. Throws "INVALID RES

Source: https://docs.chromia.com/pages/ft4-rell/-f-t4-library/lib.ft4.core.assets/validate_asset_uniqueness_resolver/

FUNCTION

# validate\_asset\_uniqueness\_resolver

```signature
function validate_asset_uniqueness_resolver(res: byte_array)
```

[Source](https://gitlab.com/chromaway/ft4-lib/-/blob/development/rell/src/lib/ft4/core/assets/asset.rell#lines-474)

Ensures that the asset uniqueness resolver is at most 1024 bytes long.

Throws `"INVALID RESOLVER"` otherwise.

**Parameters**

* **res** — the byte array to validate

[View this page on docs.chromia.com](https://docs.chromia.com/pages/ft4-rell/-f-t4%20-library/lib.ft4.core.assets/validate_asset_uniqueness_resolver.html)Generated API reference, mirrored from the live docs