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

# ReverseConnectionSourceViewMissing validation rule

> Validates that the source view referenced in a reverse connection exists. Ensures the reverse connection can function correctly.

This rule checks that the source view used to configure a reverse connection exists.

## Why it matters

A reverse connection requires a corresponding direct connection in the source view.
If the source view doesn't exist, the reverse connection is invalid.

## Example

If `WindFarm` has a reverse property `turbines` through `WindTurbine.windFarm`,
but the `WindTurbine` view doesn't exist, the reverse connection cannot function.

## Further reading

* [Validation rules](/cdf/deploy/neat/validation/index)