I need to make reason code mandatory in credit note
and I made this setting in AC parameters
but still user can create credit note without reason .
A return order is a special kind of sales order that is identified in the SO header. Simply selecting an invoiced SO and creating a credit note does not automatically create a return order. The way forward here is thus a system modification.
There is a field in CreditNoteReasonReq which is a country specific. You can take a look at the field at CustParameters.CreditNoteReasonReq and check the EDT property which has the following country countries LT,EE,LV,CZ,PL,HU,RU,GB. If you're application's country not among the list then you're suppose to customise it and make this work for your case.
I believe,You're country doesn't falls in the EDT's property range. You can give a try at least.
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