If you request to withdraw the full balance of a goal and Digit tells you that full amount is not available, there are most likely saves to that goal that are still pending.
Saves, both manual and automatic, can take up to three business days to fully transfer from your checking account to Digit. During that time, your balance will still reflect the pending saves in your goal balance.
Once your funds have posted, the word "Pending" will disappear from your goal ledger and your funds will be available for withdrawal from your goal should you need them.
You can check to see what saves are posted and pending by clicking into your goals, or looking under your Savings Journal on your dashboard.