Hi Zidar, The order data and claim transaction data originate from separate tables and are structured as a dataset for this purpose. If having a primary key column would assist...

Any help is greatly appreciated!

Yes, When a transaction is reversed, it involves returning the same quantity (as a negative value) back to the inventory.

Explanation for

O1           C3         ...

Thank you so much Drew.  I will try with few different scenarios.

Thanks