AND(
NOT( ISNEW() ),
ISCHANGED( expression )
)
However this does not work if the field is blank, I have tried multiple combinations of
ISNULL(expression)
or ISBLANK(expression)
But cannot seem to find the right one.
Does anyone have the code to allow a user to enter data in a blank field then restrict it fom being changed again
답변 12개
Check that - it is not right yet. Will continue to look at.
