How to add another product to cart using API

[darkuser123]

Hello, i'm trying to add product to cart using API as guest
When i add first product, its add successfully, but when add another product with different Id, its give me an error like this :

So how is the right way to add another product with different id to cart ?

Please Help, Thank u

[rahul]

hi @darkuser123

Kindly see the attached image.