A. Enter the actual invoice values, use the reduction function, and post. The system creates a credit memo to the actual invoice

B. Enter the actual invoice values. You must then park the invoice because posting is NOT allowed

C. Enter the actual invoice values, use the reduction function, and post. The system creates the invoice with the actual values and might block it for payment

D. Enter the actual invoice values, use the reduction function, and post. The system creates the invoice with reduced values