Currently only one modality product can be registered on a prescription per submission.
The ask from customers is to enable registration of two types of modality in a single prescription submission.
For example, a consumer wants to use WM lens during weekdays for work, but DD on weekends to play sports. In this case, ECP need to prescribe one modality (WM) for Right and Left eyes, then another modality (DD) for Right and Left eyes, which makes 4 line items to appear on a single prescription.