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# How to know valid values for models?

(CS Amazon Sync)

First, login in Seller Central

* Then go to > Inventory > Add products via Upload
* Download an inventory file
* Choose and Download Your Inventory File Template (In the help on the right side) or
* Search in the help center;

![](https://storage.crisp.chat/users/helpdesk/website/3fa8ee645cd13200/image_joaoi8.png)

Then select this;

![](https://storage.crisp.chat/users/helpdesk/website/3fa8ee645cd13200/image_r586kb.png)

And pickup the inventory file corresponding to your Universe (main grand category)

![](https://storage.crisp.chat/users/helpdesk/website/3fa8ee645cd13200/image_1r41ma0.png)

Then download the corresponding one. Then in the file you will find a Valid Values tab;

![](https://storage.crisp.chat/users/helpdesk/website/3fa8ee645cd13200/image_1cpvm2g.png)

All the valid values present in this tab can be used in your models.