@angierowley75 any ideas on this one? 

Can you provide a screen shot of the Lot/Serial Class for you production item, please?

Here is what I was testing with, @andy99 please provide yours as well when you get a moment. 

If you are assigning the serial # a time of receipt into inventory - then the scrap quantity would not have a serial # associated… right?

I agree with you however I do want to add a couple of comments.  I think this could turn into an Acumatica Idea, let me know if you agree. 

1. WIP handling specific to a pre-assigned lot/serial number.  In the case a pre-assigned lot/serial item has WIP cost associated with it (let’s say materials) how can we better accommodate the Cost of the Scrapped parent item. 

2. On a completed Production Order how can we more accurately report line details to represent pre-assigned serial numbers which were not completed. 

So I use Serialized when received for 99% of my production and purchases of serial numbers.  I have a part that is serialized and i want to scrap the part to get it into the cost of the production order but also want to make sure the serial number associated with that part gets scrapped.  I do not backflush any of my serialized parts in production because we like to dictate the proper serial numbers as we don’t do everything sequentially.

Hi @andy99 were you able to find a solution? Thank you!

Hi Chris, no still haven’t figured it out.  Currently if I need to, I just adjust the specific serial number out of stock.