Every time you add a new field, change a field size or type, or add a new index to a table your Crystal Reports have to be verified again. When you run a report, Crystal checks to see if anything has changed and if it has you will get a message alerting you to the change. To avoid getting this message, you would have to "verify database" for each report which contains the table which changed. If you have a lot of reports, or if you make changes frequently, then this can be a real challenge. This is where MassVerify comes in: MassVerify will update all your Crystal Reports so you will no longer get the "Changes Exist".