# Response: Not Found ("notfound") Indicates that a requested item is not able to be relayed to the requester. ## Message Format | Field | Length | Format | Description | |--|--|--|--| | inventory count | variable | [variable length integer](/protocol/formats/variable-length-integer) | The number of inventory items in this message. | | inventory items | <inventory_count> * 36 bytes | <inventory_count> [inventory items](/protocol/network/messages/inv#inventory-item-format) | The set of inventory items that cannot be relayed. |