When I try to reverse an invoice with a discount, I receive the following warning:

Invoice was Accepted by ZATCA (with Warnings)

The invoice was accepted by ZATCA, but returned warnings. Please, check the response below:

BR-KSA-EN16931-11 : Invoice line net amount (BT-131) must equal (Invoiced quantity (BT-129) * (Item net price (BT-146) / item price base quantity (BT-149))) + Sum of invoice line charge amount (BT-141) - Sum of invoice line allowance amount (BT-136)

 " cac:AllowanceCharge" tag not in credit not XML  and its not applicable in credit not.

so we need to update the function to create a credit note with the discounted price and remove the discount column?

Any guidance or suggestions would be greatly appreciated. 

Thank you for your time and assistance