# NominalDataScopeNotFoundError

## exception nominal.exceptions.NominalDataScopeNotFoundError

Bases: [`NominalNotFoundError`](https://dev.nominal.io/python/ref/generated/nominal.exceptions.NominalNotFoundError.md#nominal.exceptions.NominalNotFoundError "nominal.exceptions.NominalNotFoundError"), [`ValueError`](https://docs.python.org/3/builtins/exceptions.html#ValueError "(in Python v3.15)")

No readable resource has this data scope name on an asset, or this ref name on a run.

Also a [`ValueError`](https://docs.python.org/3/builtins/exceptions.html#ValueError "(in Python v3.15)"), which is what these lookups raised before this type existed, so
`except ValueError` keeps working.