I entered the income and expenses in my Internal Billing (IB) Doc incorrectly, how can I fix this?

The best way to fix this is to use the Error Correction button on the IB. This will reverse the entries, allowing you to recreate the IB with the correct numbers.

If the numbers are correct but in the wrong place (for example you entered the expenses in the income area and the income in the expense line) then you can also do a General Error Correction (GEC) and flip the entries. Note, the system will not allow negatives in IB Docs.