To narrow down my issue, I have added a customised field into the Sales invoice (Controls tab) screen SIH1 and at the same time into a new screen called ZSIH1, both held in the OSIH window. I have validated screens/ windows globally and created a new entry transaction so fields appear in both SIH1 and ZSIH1 when called by the function GESSIH.
Data entered in the SIH1 field is saved but in the customised screen ZSIH it is not.
What am I missing ? Does this possibly require a specific script for the window to work with a new screen in the window?
