Customer requisition not populating from header to lines of a sales order in AX 2012 R2

Hello,

I am working on populating the header data to lines in a sales order, in this regard I had to populate Customer requisition from header to line (prompt like other fields).

I have made the changes required for this but it doesn't seem to change. When I debugged the system is not hitting the break-point for Customer requisition field case as follows (SalesTable2LineField class). Its not even hitting the break-point for this case

Standard code already has parm and set methods for Customer requisition (PurchOrderFormNum field)

FieldLabel lineUpdateDescription()
{
    --------------------------------------
------------------------------------------
------------------------------------------
            //<NK>.<TFS2542>
            case fieldNum(SalesTable, PurchorderFormNum) :
                return fieldId2pname(tableNum(SalesLine), fieldNum(SalesLine, PurchorderFormNum));
            //<NK>.</TFS2542>
            --------------
----------------------------
-------------------------
}

Please help, is there anything I am missing, because i was able to make it work for other custom fields.