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.
1,981 pieces in 316 part and color combinations, plus 12 minifigures.
LEGO counts 2,025 pieces. This inventory comes from a separate parts catalog and lists 2,029, including the 48 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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.
Plate 1 x 2Tan ×22Dark Tan ×3Tan is lighter than Dark Tan.
Tile 2 x 4 with GrooveBlack ×1Dark Blue ×1Black is yellower and darker than Dark Blue.
Cone 1 x 1 [Top Groove]Black ×6Trans-Brown ×3Trans-Brown is see-through: hold the piece up to a light.
Brick 2 x 2 CornerBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Dish 2 x 2 Inverted [Radar]Black ×8Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly]Black ×27Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
10 more look-alike pairs
Plate 1 x 2Black ×17Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 1 x 6Black ×11Dark Bluish Gray ×16Black is darker than Dark Bluish Gray.
Plate 1 x 8Black ×9Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 2 x 4Black ×4Dark Bluish Gray ×11Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudBlack ×20Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Black ×2Dark Bluish Gray ×5Black is darker than Dark Bluish Gray.
Plate Special 4 x 4, Studs on One Edge Plain]Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile 1 x 2 with GrooveBlack ×10Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Tile Special 1 x 1 with Clip with Rounded TipsBlack ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Rock 1 x 1 Crystal 5 PointTrans-RedPart 30385Element 6507863 or 6236961×1
Stickers
1 piece
Sticker Sheet for Set 10217-1[No Color/Any Color]Part 92952Element 4598406×1
Technic Gears
1 piece
Technic Driving Ring Extension, 4 RidgesLight Bluish GrayPart 32187Element 4278756 or 4209329×1
Minifigures
12 figures
Goblin, Black Jacket and Reddish Brown LegsMinifigure, checked as a whole figure×1
Hermione Granger, Light Bluish Gray Sweater with ZipperMinifigure, checked as a whole figure×1
Skeleton, Standard Face, Ball Joint Arms (3626b Head)Minifigure, checked as a whole figure×1
Rubeus Hagrid, Dark Brown OvercoatMinifigure, checked as a whole figure×1
Lucius Malfoy, Black Robes and Cape, Death Eater MaskMinifigure, checked as a whole figure×1
Harry Potter, Open Dark Blue Jacket over White Shirt, Black LegsMinifigure, checked as a whole figure×1
Fenrir GreybackMinifigure, checked as a whole figure×1
Ron Weasley, Red Tartan Sweater Vest, Reddish Brown LegsMinifigure, checked as a whole figure×1
Fred / George Weasley in Dark Orange SuitMinifigure, checked as a whole figure×2
Garrick Ollivander, Reddish Brown JacketMinifigure, checked as a whole figure×1
Goblin, Black Jacket and Light Bluish Gray LegsMinifigure, 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.