In Oracle Subscription Management we want to create warranty subscription for maintenance asset

we have defined the coverage level, created Warranty item, created subscription using the warranty item and attached asset to covered level

we are performing depot repair process where the RMA is initiated by creating a service order and the corresponding invoice, now, we assume that the subscription lines should be added on the order like the discount we have set on the coverage level which is attached to this maintenance asset should be reflect on order management line before creating the invoice as per our understanding where as nothing is being added from the subscription process

where we are missing?