# Nested objects in schema cause Error: Property "nestedProperties" is not known

**URL:** <https://forum.weaviate.io/t/nested-objects-in-schema-cause-error-property-nestedproperties-is-not-known/965>\
**Category:** Support\
**Created:** [November 15, 2023, 2:03pm UTC](https://forum.weaviate.io/t/nested-objects-in-schema-cause-error-property-nestedproperties-is-not-known/965 "2023-11-15T14:03:43Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![kokogrr](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/kokogrr/32/435_2.png) [@kokogrr](https://forum.weaviate.io/u/kokogrr)\
**Post date:** [November 15, 2023, 2:03pm UTC](https://forum.weaviate.io/t/nested-objects-in-schema-cause-error-property-nestedproperties-is-not-known/965/1 "2023-11-15T14:03:43Z")

</div>

Hello, I try to create schema for collection/class in Weaviate using new nested object available from v1.22. I’m using v1.22.3. I try to add following property (taken from documentation:

```auto
[
 [...other props],
{
        "name": "body",
        "dataType": ["object[]"], # Array of objects. `object` and `object[]` are available from `1.22`.
        "nestedProperties": [
            {
                "name": "chunk",
                "dataType": ["text"],
            },
            {
                "name": "chunk_no",
                "dataType": ["int"],
            },
        ]
    },
]

```

But I get following error:

```auto
weaviate.exceptions.SchemaValidationException: Property "nestedProperties" is not known.

```

When I remove the property from props list it works. Is there something i missed?

---

<div class="post-metadata">

**Author:** ![kokogrr](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/kokogrr/32/435_2.png) [@kokogrr](https://forum.weaviate.io/u/kokogrr)\
**Post date:** [November 16, 2023, 9:56am UTC](https://forum.weaviate.io/t/nested-objects-in-schema-cause-error-property-nestedproperties-is-not-known/965/2 "2023-11-16T09:56:38Z")

</div>

Ok, for future reference I needed to update Python Client to v3.25 🙂

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<div class="post-metadata">

**Author:** ![DudaNogueira](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.weaviate.io/dudanogueira/32/7846_2.png) [@DudaNogueira](https://forum.weaviate.io/u/DudaNogueira)\
**Post date:** [November 16, 2023, 11:20am UTC](https://forum.weaviate.io/t/nested-objects-in-schema-cause-error-property-nestedproperties-is-not-known/965/3 "2023-11-16T11:20:11Z")

</div>

Hi @kokogrr !!

I was about to dig into this issue, and glad to see you were able to figure this out.

Nice catch and thanks for sharing!