"Timesheet validation rules define whether data entered in a timesheet is valid. If, based on a validation rule, data is found to be invalid, a warning or error will occur. Depending on the workflow conditions, the system may prevent users from submitting a timesheet if it contains errors or warnings." 

Is this available in Odoo17 

If I enter some time entries, which is higher or lesser than the required amount. Will the Odoo be able to show up a warning or error message.

Can anyone put forward a helping hand.