Can I merge some supplier account with different currency ?

Hi there, mohammad-k-katri. 

I'd be glad to share some information about merging currency in QuickBooks Online (QBO).

The option to merge supplier accounts with different currencies isn't available in QuickBooks Online (QBO). By default, QuickBooks is designed to assign one currency. 

On the other hand, you can reach out to your professional accountant. This way, they can give you an alternative and ensure to keep your records accurate. 

For more information about the Multicurrency feature as well as managing customers in QuickBooks Online, you can check out the following articles:

• Add and manage customers in QuickBooks Online.
• About Multicurrency.

Please leave a comment below if you have any other currency issues in QBO. I'm more than willing to help. Have a great day.