I appreciate you getting back to us and providing a screenshot of the error, @muhannad-acc1.

You'll have to make sure that the account you're using under Inventory asset account matches the home currency. Let me walk you through the process of creating an inventory item.

Please know that the currency of sales and purchases are determined by the customer/vendor's currency, and not the products and services.

Here's how:

1. Click the Gear icon, then select Products and Services.
2. Hit the New button, then choose Inventory.
3. Enter the name of the item, quantity, and date.
4. In the Inventory asset account drop-down, select the account that matches to your home currency.
5. Choose the appropriate Income and Expense account from the drop-down.
6. Click Save and close.

Just in case, you can check out these articles to know how to edit an inventory quantity adjustment and track inventory manually:

• Edit an inventory quantity adjustment.
• Can I track inventory manually?

Please let me know how it goes in the comment section below. I'm only a post away if you have any follow-up questions. Wishing you all the best.