Notification to be sent on PO changes

Hi Experts,

I am new to SRM and I need some details on PO Workflow notifications. We are using SRM 5.0 and we have a requirement where we need to generate notifications to be sent to the buyer if certain conditions are met. These conditions are related to some field changes on PO and other checks. We will build the logic in N-step PO approval workflow. My question is about the notifications to be sent to the buyers, is there a standard template for PO Change workflow or we would need to develop it ourselves?

Thanks in advance,

M.