If you are the Admin user, you can set a lock date to stop changes being made to invoices created in the past. After you set a lock date, users can’t edit invoices in the SportLogic software if the invoice date is earlier than the lock date. You would typically set a lock date when your financial records are being prepared for the year, or at the end of a sales tax period. You can change and remove the lock date at any time.
TO SET A LOCK DATE:
Go to File, Config then Finance and click on Lock Dates.
This will open the window shown below where you can select your lock date.
Users will not be able to modify any invoices created before the lock date.
To Unlock, uncheck the Invoice Lock Date.