Before you start integrate your product from dealPOS to marketplace, first you need to sycnronize all your product to marketplace.
here is some explanation about product on marketplace app.
I. In POS
In POS is list of products that exist in DealPOS system.
II. Not in POS
Not In POS is list of your product that exist on your marketplace but did not exist in DealPOS. Causes products on your Marketplace doesn't have SKU code. You need to complete SKU code first to able to download into DealPOS.
III. Sold In Channel
Sold In Channel is list of your product that have been sync to marketplace Channel.
IV. Not In Channel
Not In Channel is list of your product that has not sync to marketplace, if you have two marketplace channel integrate to your DealPOS, you can check at "Missing Channel.
V. Duplicate SKU
Duplicate SKU is list of product in your marketplace which has the same SKU.