Prevent changing original mode of entry purchase order

[BenH]

We are entering Purchase orders in Domestic mode (Euro) and Foreign mode (USD, GBP, etc). We want to prevent users from changing the original mode of entry of existing orders from F(oreign) to D(omestic). Can anyone tell me where or how I can do that? Thnx.

 

[Eric Lehti]

Screen Design Aid editor > protect field from user input - is one technique. Recompile the video.
Or SEU edit the RPG source, adding logic to prevent users from changing the mode > recompile RPG program