Adjusting data entry limits
You can adjust data entry limits via:
[1.Animal records] - [12.Settings] - [1.Sows]
'Data entry limits' tab
Setting the data entry limits to reflect actual conditions ensures that the program issues a timely warning and prevents incorrect data entry.
Message: 'Gestation period is shorter than ... days' – farrowing entry not possible
The date you are entering may be in the past. Please check this.
Another possibility is that you need to adjust the entry limits:
[1. Animal Records] - [12. Settings] - [1. Sows]
'Entry limits' tab
Check the gestation period lower and upper limit settings.