Epicor 9 9.05.605 - Non Conformance processing

 In Non Conformance processing, when you do a non conformance from Inventory, the reason codes are for Inventory adjustments.

I try to change the filters from Reason Type 'M' to 'S'.

I save and it will not take.

Is there a reason for this?

I would like to change the filter  - if I have to use the Inventory Adjustments code 'M' to at least get Reason Code that start with 'NC'.

I tried but, can't save this either.

Is there a way to change this?