# number-of-objects-in-3d-model-exceeds-200

> Learn how to ungroup and manage 3D models in Coohom when exceeding 200 objects, ensuring smooth uploads and efficient design work. Start optimizing your models now!

- **URL**: https://www.coohom.com/helpcenter/number-of-objects-in-3d-model-exceeds-200
- **Locale**: en_US
- **Updated**: 2026-05-21

## Content

The number of objects in a 3D model on Coohom platform should not exceed 200. If you see an error saying *Number of objects exceeds 200*while uploading, remember to decrease the objects in your .max file first.

Under this circumstance, we have to ungroup the model. How can we do this?
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849649046/0E0F37132AAF6E035DA3A251EC4EFFE2.png)

First, Ctrl + A to select the model and click **Group** . Click **Ungroup** in its drop-down menu until the font is grayed out. (White font means that the model has not been ungrouped completely.)
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849650820/FFE4B87F29DC408AF463DD6AFE7F6B71.png)

Second, Ctrl + A to select the model and the **Modifier List** on the right side will show how many objects in the model are selected. (If you do not ungroup your grouped model, this list will not show this.)
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849651814/50E0EE2299A6EA3C9A5E22291F9FCD50.png)

Solution: Ctrl + A to select the model and right click to choose **Convert to Editable Mesh**.
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849652812/EFFCDCE628216D1EB10F9604F6FADE6E.png)

Select some objects in this model and click **Attach List** in the right panel.
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849653863/91BD08F72890079CD92331505DDCE91A.png)

Ctrl + A to select all and click **Attach** in the pop-up **Attach List**.
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849654846/CA8512C1AD8B14E27A3D8EA0926B6047.png)

If different materials exist among these objects, you may see the box below. Make your choice.
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849655620/3C48A1A27AFBBB287A1CE14F3B55DB6B.png)

Finally, use the **Archive** functionality in 3ds Max and then upload your model to Coohom!
![](//qhstatic-sg-s3.coohom.com/yuntai/image/png/1733849657589/9291FCC43B8F840903D07EA84F09C19C.png)