Why there isn't any notice when I enter the DELIVERY transaction date pre-dates the ACCEPT ？

The RECEIVE transaction date is 2026-01-16，the ACCEPT transaction date is 2026-01-20，according to normal logic the DELIVERY transaction date can't be earlier than ACCEPT transaction date.But when user entered 2026-01-19 into DELIVERY transaction date ，the system did not issue a warning for the erroneous behavior as expected，such as：

APP-PO-14878: Child transaction date pre-dates parent transaction date

Cause: you tried to enter a child transaction date that is earlier than the corresponding parent transaction date

I want to know the reason.Thanks.