# Where Used Inquiry (WU.Q)
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Part Number Enter the part number you wish to inquire against, or a model number, category or manufacturer part number.
Assembly/Description This column contains the assembly numbers and the assembly descriptions on which the part number is used.
Item/Quantity Contains the line item numbers of the part used on the associated assembly.
BOM Qty Contains the quantity of the part used on the associated assembly in BOM U/M terms and the quantity of the part in stock U/M terms.
UM This is the BOM Unit of measure for the component part and the stock unit of measure for the component part.
Start/End Effectivity Displays the start and end effectivity for the part as defined on the associated assembly.
Reference Designator Contains the reference designator information associated with the assembly line item.
View Multi-Level Click this button to view the where used data in a grid that allows you to expand the entries up through higher levels in the where used structure.
Version 8.10.57