We are using Atera for an internal IT team not an MSP, but when we buy things from vendors it would be very helpful to be able to Create/Track/Relate POs for these items. Ideally some things to include would be:

Order Information:
PO Number - Auto Number with option to set starting number
Status (Open, Canceled, Partially Received, Received)
Date Ordered
Date Required
Date Received/Closed
Payment Terms - Selectable from List or Add New To List

Requestor Information - Selectable from Users
Requestor Name
Email
Phone
Department
Location

Vendor Information - Selectable from List or Add New To List
Vendor
Address
Contact
Phone
E-mail Address

Shipping and Billing Information - Selectable from List or Add New To List
Ship To Location
Bill To Location

Sub Total (Calculated)
Shipping
Tax Rate
Sales Tax (Calculated)
Total Cost

Purchase Item:
Product Name - Selectable from List or Add New To List of "Master Items"
"Master Items Fields" - Product Name, Manufacturer, Product Type (Selectable from List or Add New To List), Part Number, Version, Vendor (Same List As PO Vendor List), Price, Warranty, Support, Maintenance Vendor, Contact, Comments, Taxable (Yes/No)
Order Information:
Quantity Ordered
Price
Total Cost
Check Box for Taxable
Receiving Information - Quantity Received If Partial

Ticket:
Can be associated/linked with a ticket

Attachments:

Purchase Order Details:
Date
Technician