Your normal decorator is backed up.
The job isn't a good fit for their shop.
You need a decoration capability they don't offer.
The deadline is tighter than their current schedule allows.
Or the decoration cost leaves you with less margin than you'd like.

Your decorator is full.
You need another decoration capability.
The job isn't a good fit for your current production partner.
You need additional capacity.
DecoMatch DTF economics make more sense for the order.