FYI, it's required for some special product types such as Smart bundle/grouped/composite to have existing, purchasable products in your store added as sub-products inside. All sub-items must be purchasable with a valid price to make the main bundle/grouped/composite in stock. So there's no way an empty grouped product can work without any valid sub-product inside.
How can I make the main product purchasable without necessarily having to add a grouped product?
Hi Luca,
Thanks for contacting us here.
FYI, it's required for some special product types such as Smart bundle/grouped/composite to have existing, purchasable products in your store added as sub-products inside. All sub-items must be purchasable with a valid price to make the main bundle/grouped/composite in stock. So there's no way an empty grouped product can work without any valid sub-product inside.
Best regards.
Janilyn T. - WPClever Support Agent