manual override option for Unit selling price and Return Reason in Order line level

 Hi,

I have a requirement where i need to use the some user defined price which is comming from  attribute3 from oe_order_lines_all

based on this line_id and price from attribute3 of that line id i need to create a new RMA order with user defined return reason

i can able to create a RMA order by i am facing the issue like

1) i cant able to create a RMA order with the custom price and it is creating the RMA order with default selling price and unit price

2) can able to use the customer/user defined return reason and i am facing the error like 'Return Reason' Validation failed but i need to used user defined and not a appl;ication defined return reason