When using Intercompany functionality, you can create a Sales Order in Company A and generate a corresponding Purchase Order in Company B by using the "Send IC Sales Order" function. When you invoice the Sales Order in Company A, Business Central automatically creates a corresponding Purchase Invoice in Company B. As a result, there is now both a Purchase Order and a Purchase Invoice in Company B related to the original Sales Order. This does not make sense from a business perspective and the user must cancel one of these documents manually.

If a Purchase Order has been created for the full amount/quantity of the Sales Order, a Purchase Invoice should not be created when the Sales Order is invoiced. There should not be multiple Purchase documents associated with the full value/quantity of the original Sales Order.