Inventory ID 
A unique identifier representing a specific instance of material that is consumed during the assembly of the material in the manufacturing process
The inventory ID is a key record for genealogy. It is created when a specific instance of manufactured material completes its manufacturing process. Additionally, an inventory ID is created when a specific instance of material is received on the shop floor for component consumption. The inventory ID is created through SAP ME ERP integration or manually by shop floor personnel (see Inventory Receipt).
Structure
See Material
Integration
You edit inventory IDs using Maintain Inventory (see Maintain Inventory)
SAP ME ERP Integration
When material is issued and reserved in SAP ERP to a specific production order, the material document is reported to SAP ME and received as reserved components for a production order or shop order. During assembly of these components, validation occurs to ensure that the material is reserved for an SFC number in the specified production order or shop order. For more information, see Transfer of Inventory Data and Transfer of Inventory Return and Scrap Data.