Currently when importing multiple sales order lines for the same item with the same inventory dimensions, concurrency error can be thrown if the total quantity of the lines is higher than the available on-hand. When this issue happens, the lines don't get imported and an error is thrown:

"Physical on-hand.... 0 cannot be picked because only -5 is/are available from the inventory for item: X. Update has been canceled"

What is needed: A feature should be implemented to allow for the lines to be imported normally without getting reserved if needed.

Related LCS link: Details for issue 774384 (dynamics.com)