How to enter SBT sales (Scan based trading)

Hi 

Our company supplies stock to a national retailer on SBT bases, where we send them stock to their stores all over Australia.

We sent the stock to individual stores with $0 value as we will be paid via RCTI once the stock is sold. We received the first RCTI but i am not sure how do i enter this in the system as sytem does not have any stock of what is on the RCTI as we invoiced it out at $0. Can someone please help on how can i enter this? Thank you.