> ## 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.

# ReverseConnectionContainerPropertyWrongType validation rule

> Validates that the container property mapped from the view's direct connection property has type DirectNodeRelation. Ensures connections can be stored correctly.

This rule checks that the container property (mapped from view's direct connection property)
has type DirectNodeRelation.

## Why it matters

Container properties backing connection view properties must be DirectNodeRelation type.
Other types cannot represent connections in the underlying storage.

## Example

If `WindTurbine.windFarm` maps to container property with type Text instead of DirectNodeRelation,
the connection cannot be stored correctly.

## Further reading

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