Customer Order - How can we cancel Delivery for a "Create SM Object" line

Hi, 

   my project’s scope is manufacturing -> Sales -> After Service (EAM)

   so, for Customer Order line, we will check “Create SM Object” to make IFS create “Serial Object” automactially when the order get deliveried.

   while, we found that after “Delivery”, we cannot undo the delivery, IFS don’t allow to do this(because there is a Serial Object).

   Is there any workaroud for this?

     thanks