Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece
and leave with the element ID LEGO asks for, or a link to buy the part.
3,179 pieces in 741 part and color combinations, plus 12 minifigures.
The official piece count includes the 49 parts inside the set's minifigures, which this inventory lists separately. Spare parts are counted in neither figure.
Before you call it missing
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Brick Round 1 x 1 Open StudTrans-Yellow ×6Opal Trans-Yellow ×2They are nearly the same color: go by the element ID in the parts list.
Tile Round 1 x 1Trans-Red ×3Red ×1Trans-Red is see-through: hold the piece up to a light.
Brick Round 1 x 1 Open StudTrans-Clear ×9White ×1Trans-Clear is see-through: hold the piece up to a light.
Tile Round 1 x 1White ×6Trans-Clear ×1Trans-Clear is see-through: hold the piece up to a light.
Plate 1 x 1Yellow ×2Trans-Yellow ×5Trans-Yellow is see-through: hold the piece up to a light.
Door Frame 1 x 4 x 6 Type 2Dark Brown ×1Reddish Brown ×1Dark Brown is greener and darker than Reddish Brown.
22 more look-alike pairs
Equipment Wand [Individual]Dark Brown ×2Reddish Brown ×1Dark Brown is greener and darker than Reddish Brown.
Window 1 x 2 x 2 Flat FrontReddish Brown ×3Dark Brown ×35Reddish Brown is redder and lighter than Dark Brown.
Window 1 x 2 x 3 Flat FrontDark Brown ×2Reddish Brown ×2Dark Brown is greener and darker than Reddish Brown.
Plate 2 x 2Tan ×4Dark Tan ×8Tan is lighter than Dark Tan.
Plate 4 x 8Dark Tan ×2Tan ×1Dark Tan is darker than Tan.
Tile 2 x 4 with GrooveDark Tan ×1Tan ×1Dark Tan is darker than Tan.
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Black ×1Dark Blue ×1Black is yellower and darker than Dark Blue.
Bar 2L with Stop in CenterDark Bluish Gray ×2Black ×2Dark Bluish Gray is lighter than Black.
Brick 1 x 2 x 2 with Inside Stud HolderDark Bluish Gray ×5Black ×2Dark Bluish Gray is lighter than Black.
Brick 1 x 4Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Brick 1 x 6Black ×1Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Plate 1 x 1Dark Bluish Gray ×1Black ×3Dark Bluish Gray is lighter than Black.
Plate 1 x 1 x 2/3 with Open StudDark Bluish Gray ×2Black ×3Dark Bluish Gray is lighter than Black.
Plate 1 x 2Dark Bluish Gray ×10Black ×9Dark Bluish Gray is lighter than Black.
Plate 1 x 3Dark Bluish Gray ×3Black ×1Dark Bluish Gray is lighter than Black.
Plate 1 x 4Black ×1Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Plate 2 x 2Dark Bluish Gray ×7Black ×5Dark Bluish Gray is lighter than Black.
Plate 4 x 4Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Black ×1Dark Bluish Gray ×19Black is darker than Dark Bluish Gray.
Tile 1 x 2 with GrooveBlack ×9Dark Bluish Gray ×25Black is darker than Dark Bluish Gray.
Tile 2 x 2 with GrooveBlack ×16Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile Round 1 x 1Dark Bluish Gray ×18Black ×2Dark Bluish Gray is lighter than Black.
Minifig Trophy StatuetteBlackPart 90398Element 6335910 or 6107890×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
12 figures
Horace SlughornMinifigure, checked as a whole figure×1
Professor Minerva McGonagall, Dark Green Robes, Dark Tan Hair, Plain SkirtMinifigure, checked as a whole figure×1
Ron Weasley, Dark Brown JacketMinifigure, checked as a whole figure×1
Zonko ShopkeeperMinifigure, checked as a whole figure×1
Aberforth DumbledoreMinifigure, checked as a whole figure×1
Hermione Granger, Dark Bluish Grey CoatMinifigure, checked as a whole figure×1
Cornelius Fudge, Black SuitMinifigure, checked as a whole figure×1
Ambrosius FlumeMinifigure, checked as a whole figure×1
Draco Malfoy, Black Coat, Long LegsMinifigure, checked as a whole figure×1
Katie Bell, PossessedMinifigure, checked as a whole figure×1
Harry Potter, Black Coat, Long Dark Bluish Grey LegsMinifigure, checked as a whole figure×1
Madam RosmertaMinifigure, checked as a whole figure×1
Tick each piece as you find it, or mark it missing.
When a piece really is missing
Ask LEGO
LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for
the set number and each piece's element ID, the number printed beside the piece in the parts list at the back
of the instructions. This checker lists both.
Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from
older or second-hand sets.
Keep a record
Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick
pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.