I still understand that our Credit notes can be used to settle on customer payment because those Credit notes is linked to original invoice which can be referred on payment that it is different form the case of there are no outstanding invoices,credit notes may be paid by cash out.
However, if you need to pay money on this Credit notes it must be approved by the person who authorized of company.(7MTHB for those C/Ns)
What is our practice in the past since we used to issue Credit notes to customer and never had this problem before?