Scenario
Practice CS lets you delete a project only if there is no history or data of any type, or references to the project in the database. This is necessary to maintain data integrity.
If you attempt to delete a project with historical data you'll get an error.
Task cannot be completed because it is associated with historical data.
You'll receive a similar message when trying to delete a project template associated with historical data.
Historical data may include:
Receipts and adjustments
Service charges
Invoices
Time and expense transactions
Scheduled items including scheduled phone calls, and to do's (applies only if you have the Staff Management Module)
References to the project in on-screen filters, as well as report filters and report options.
To resolve this and delete the project, you'll need to find and delete any and all data associated with the project.