How Do I .... Create 100% discount clients
In order to trace batch numbers of broken and out of date stock why not add 2 clients to the system Out Of Date and Breakage.
First of all you need to set a letter to represent 100% discount
Invoice Production -> Disc/Surcharge Structure -> Option 14
Set J to 100
Edit the Management record discount field to ---J
And that's it!
P.S. You could also create a client called Op Room to destock items taken from the store room to the op room which are used during operations but not charged for.