Edit mode and Dispaly mode on a Single ZTable

Hi All,

My requirement is to create a ZTable with two TCodes assigning to it. One for Create/Change and other one is for Display/Read Only.

So once I've done with creating ZTable, I've assigned TCodes with UPADTE = 'X' for Create/Change and

                                                                                                           SHOW = 'X' for Only Display.

But in SHOW = X, still we can go for changing the data. How to restrict that? Kindly let me konw the best solution.

Thank You.