Read only attribute at RUN Time (ACCPLTYP-P&L Statement account type)

Hi

MDG attribute (ACCPLTYP-P&L Statement account type) is read only by default when we open the change request screen in MDG thorugh NWBC.

1. In customization it seems that display type is input type.
2. In configure properties of change request step also for every change request step field properties is Standard only.

Now as per SAP we can define mulitple accounts for P& L Statement Account type for  Profit and Loss account type in OB53 and can be used in GL account creation by selecting  P& L Statement Account type in FS00.

Now it works in ECC as this field is editable with input help, but in case of MDG as this field is read only we can not do selection.

So we want to convert to editable mode. How to achive this?