After syncing products, a product status that shows an 'Attention' status means that it hasn't synced over successfully - this is typical when bulk syncing large amounts of products at the same time. In most cases, you can simply try to sync the product again and it will work.

If it doesn't, you can check the activity center to see why it failed.

The most common cause for a failed sync is that there is a duplicate or missing SKU in one of the stores. You would need to check and update the product to ensure that there are no duplicate SKUs that exist.