I identify below validation issue related with the MR / SR and Purchase orders.
- MRN / SRN allow to cancel it after complete the purchase order process
- MRN / SRN allow to remove the mark for po tick it after complete the purchase order process
- After pay the 100% prepayment , related unit price can be reduce at purchase order.
- After completed the purchase receipt , purchase order allow to change the currency type
Please advice is it resolved through configuration or is it customization? .