Fill Rate (Receive Fill Rate)
Fill Rate (Receive Fill Rate) is the share of the units an Amazon vendor confirmed on its purchase orders that Amazon's fulfillment centers actually received, measured at the receiving step that follows the accept and backorder answers given at PO confirmation.
Lost buy box due to price
LBB (Lost Buy Box) due to price is the Vendor Central metric for the percentage of an ASIN's page views during which Amazon had the item in replenishable state and lost the buy box to a third-party merchant due to uncompetitive price.
Manufacturing vs Sourcing View
Manufacturing View and Sourcing View are the two settings of the Distributor View control in Vendor Central's Retail Analytics Sales and Inventory reports: Sourcing View counts only the ASINs Amazon bought from you under your own vendor code, and Manufacturing View counts every ASIN carrying your brand, whatever vendor code Amazon bought it through.
Monthly Estimated Net Received
Monthly Estimated Net Received is a calculated value using the weekly "Net Received" value from the "InventoryHealth" report. Currently, Amazon ARA doesn't provide a Monthly Net Received so this is used as an alternative.