Add validation on expenditure item date at AP invoice line based on task start date & closing date

Hi,

We have a requirement to impose restriction for expenditure item date field at AP Invoice line level based on task start date and expense closing date which is attribute at task level. If Expenditure Item Date is not between Task Start Date and Task level Expense Closing Date DFF field value then display an error message and disallow entry of AP Invoice Line or Distribution.

We tried to access the field using page composer but unable to do so as it is showing 'Rendered attribute of the component is false'. Please let us know how to achieve this.

Regards