You can delete time entries in CORE using the below steps:  

1. Open the Time Entries screen and select the entries to be deleted.
2. Click Actions > Delete.
3. To delete a single entry only, you can use the row action menu instead and click Delete.

However, you cannot delete a time entry in the following cases:

• If it is associated with a vendor bill or credit card
• If it has already been billed or marked as ‘Billed’
• If you cut a check for that time entry in the Write Checks screen
• If your company has the DCAA compliance option applied in Settings
• If you do not have permission to delete time entries as per your security settings
• If it falls out of the set date range specified in Settings > Time & Expenses > Time Entry
• If it falls beyond the company's closing date