Shipping of wrong products

I have encountered the following scenario:

Customer ordered 100 EA of product A. Due to some mistakes made in warehouse, physically, 90 EA of product A + 10 EA of product B were packed and shipped to customer. However, in the system, 100 EA of product A were issued out.

Later, customer reported that a wrong product was shipped and request a credit note to claim back the total amount of 10 EA of product A, and at the same time, they return 10 EA of product B.

If we don't want to cancel the previous invoice and GI document, what can be done in the system to reflect the whole case? So that qty of A and B are corrected.

Thanks.