# How to add multiple data objects in a single UUID

**URL:** <https://forum.weaviate.io/t/how-to-add-multiple-data-objects-in-a-single-uuid/1261>\
**Category:** Support\
**Created:** [January 19, 2024, 1:12pm UTC](https://forum.weaviate.io/t/how-to-add-multiple-data-objects-in-a-single-uuid/1261 "2024-01-19T13:12:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Vedant](https://avatars.discourse-cdn.com/v4/letter/v/ba9def/32.png) [@Vedant](https://forum.weaviate.io/u/Vedant)\
**Post date:** [January 19, 2024, 1:12pm UTC](https://forum.weaviate.io/t/how-to-add-multiple-data-objects-in-a-single-uuid/1261/1 "2024-01-19T13:12:43Z")

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I’m trying to add multiple data objects into a single UUID in a specific tenant but its not getting added.  
If you can suggest how to encounter the problem or a different approach to do the same.

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**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:** [January 19, 2024, 1:16pm UTC](https://forum.weaviate.io/t/how-to-add-multiple-data-objects-in-a-single-uuid/1261/2 "2024-01-19T13:16:43Z")

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Hi! Welcome to our community 🤗

This is not possible.

Each object, given a tenant and a class, must have a unique UUID.

if you add an object, providing an UUID, then add a second object providing the same UUID, it will not add (considering you are inserting an object) or will update it (considering a batch import).

You can add different objects, with different UUID and have a “reference id” so you can filter out those objects.

Let me know if this is what you are trying to accomplish and if this clarifies it for you!

Thanks!

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<div class="post-metadata">

**Author:** ![Vedant](https://avatars.discourse-cdn.com/v4/letter/v/ba9def/32.png) [@Vedant](https://forum.weaviate.io/u/Vedant)\
**Post date:** [January 19, 2024, 1:27pm UTC](https://forum.weaviate.io/t/how-to-add-multiple-data-objects-in-a-single-uuid/1261/3 "2024-01-19T13:27:33Z")

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Can you provide me documents how to add a reference id and use it with the vector.similaritysearch further pushing it to the llms

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**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:** [January 19, 2024, 1:31pm UTC](https://forum.weaviate.io/t/how-to-add-multiple-data-objects-in-a-single-uuid/1261/4 "2024-01-19T13:31:01Z")

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A “reference id” I mentioned would be a property that you can add to your class for filtering.

Here more info on adding properties:

> **[Manage collections | Weaviate - Vector Database](https://weaviate.io/developers/weaviate/manage-data/collections#create-a-collection-and-define-properties)**
>
> Every object in Weaviate belongs to exactly one collection. Use the examples on this page to manage your collections.