Customer purchase order burnout tracking

Hi,

Usually our invoicing needs to check customer purchase order information before generating draft invoice.

Team generates invoice if purchase order amount is sufficient or else they have to contact customer for a fresh PO.

Currently project wise customer wise purchase order tracking is done manually in excel.

We have resource wise PO as well, meaning multiple PO's for single project, so cont use agreement functionality.

Is there any module/functionality to track the purchase order burnout?

Please share inputs.

Regards

Nagaraju