How are Amazon Vendor purchase-order metrics calculated?

Amazon Vendor purchase-order metrics track the journey from Amazon’s initial stock request through to the quantity recorded as received.

Purchase-order quantity definitions

Metric	What it means	Calculation
Submitted quantity	The quantity Amazon initially requests from the Vendor	Source value
Accepted quantity	The quantity the Vendor agrees to supply	Source value
Rejected quantity	The portion of Amazon’s request the Vendor does not accept	Submitted − accepted
Cancelled quantity	Quantity Amazon removes after revising its original request	Source value
Receipted quantity	The quantity Amazon records as received	Source value
Shortage quantity	Accepted quantity not recorded as received	Accepted − receipted

How are the main rates calculated?

Acceptance rate

Acceptance rate shows how much of Amazon’s original request the Vendor agreed to supply.

Acceptance rate = accepted quantity ÷ submitted quantity

Receipt rate

Receipt rate shows how much of the Vendor’s accepted commitment Amazon recorded as received.

Receipt rate = receipted quantity ÷ accepted quantity

Cancellation rate

Cancellation rate shows how much of Amazon’s original request Amazon later cancelled.

Cancellation rate = cancelled quantity ÷ original submitted quantity

Worked example

Amazon submits a purchase order for 100 units. The Vendor accepts 80 units, and Amazon later records 75 units as received.

Metric	Result
Submitted quantity	100
Accepted quantity	80
Rejected quantity	20
Receipted quantity	75
Shortage quantity	5
Acceptance rate	80%
Receipt rate	93.75%

If Amazon separately cancelled 10 units from its original request, the cancellation rate would be 10%.

Why can the values differ?

Differences can occur because:

The Vendor does not have enough stock to accept the full request
Amazon revises or cancels part of the order
The Vendor ships fewer units than accepted
Products are lost, delayed or damaged in transit
Amazon records a different quantity during receiving
Warehouse processing is incomplete at the time of reporting

Important note

The stage at which the quantity changes helps identify where to investigate, but it does not by itself prove which party caused the difference.

Recent or partially processed purchase orders may also change as Amazon completes receiving or updates the order status.

Need help?

Contact support@merchantspring.io and include the relevant account, purchase-order number, Vendor code, ASIN, reporting period and any helpful screenshots or exports.