Optimisation Assistant
The MYOB Accounting Plus Optimisation Assistant is a separate software program (it's not a part of Accounting Plus itself); this utility can be found in the folder where Accounting Plus is installed. Over time, your company file may become unnecessarily large as you add and delete transactions. The Optimisation Assistant removes any blank spaces left in your company file when you deleted transactions from your company file and performs other routine maintenance tasks that are designed to make your Accounting Plus file run faster and take up less space on your hard disk. It also may repair minor problems in your company file.
Remember, neither the Data Verification Utility nor the Optimisation Assistant guarantees that your company file will not fail. Additionally, neither of these tools is guaranteed to repair a failed company file. The only real defence you have against data damage is to keep both current and archived backup copies of your data.
See Optimising company files for more information