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.
1,424 pieces in 471 part and color combinations, plus 9 minifigures.
LEGO counts 1,462 pieces. This inventory comes from a separate parts catalog and lists 1,471, including the 47 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.
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Red ×4Trans-Red ×2Trans-Red is see-through: hold the piece up to a light.
Tile Round 1 x 1Red ×1Trans-Red ×1Trans-Red is see-through: hold the piece up to a light.
Tile Round 1 x 1White ×1Trans-Clear ×1Trans-Clear 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.
Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / GrateBlack ×4Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Cone 1 x 1 [Top Groove]Black ×8Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
3 more look-alike pairs
Plate 1 x 4Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 1 x 8Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Open StudBlack ×3Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Barrel 2 x 2 x 2Dark Bluish GrayPart 2489Element 6278986 or 4218730×1
Container Box 2 x 2 x 2 - Top OpeningDark Bluish GrayPart 61780Element 4520307×1
Plants & Trees
2 pieces
Plant, Plate 1 x 1 Round with 3 LeavesBright GreenPart 32607Element 6182261×1
Plant, Stem with 3 Leaves and Bottom PinBright GreenPart 37695Element 62350801 spare in the box×1
Animals / Creatures
1 piece
Animal, Cat, Standing with Bright Light Orange Spiky Mohawk and Collar, Bright Light Orange Stripes PrintMedium AzurePart 39742pr0002Element 6296351×1
Flags, Banners and Signs
1 piece
Road Sign Clip-on 2 x 2 Square [Thick Open O Clip]Dark Bluish GrayPart 15210Element 6315300 or 6063616×1
Minifig Headwear
1 piece
Helmet with Antennae and Headphones and Black Visor with Green Honeycomb, Gold/Green Decorations Print (Mei)WhitePart 46534pr0340Element 6334587×1
Rock
1 piece
Rock 1 x 1 Jewel / Gem 24 FacetTrans-PurplePart 30153Element 6513977 or 62477991 spare in the box×1
Stickers
1 piece
Sticker Sheet for Set 80023-1[No Color/Any Color]Part 76914Element 6334701×1
Technic Beams Special
1 piece
Technic Beam Frame 5 x 7 with 3 x 5 Opening ThickLight Bluish GrayPart 64179Element 4539880×1
Tools
1 piece
Brick and Axle Separator v2.0Dark TurquoisePart 96874Element 6254100×1
Minifigures
9 figures
Red Son with Neck Bracket with 4 BarsMinifigure, checked as a whole figure×1
Monkie Kid, Dark Turquoise Hood, HappyMinifigure, checked as a whole figure×1
Sandy (Big Fig)Minifigure, checked as a whole figure×1
HuntsmanMinifigure, checked as a whole figure×1
Mei, Pearl Gold ArmorMinifigure, checked as a whole figure×1
Spider QueenMinifigure, checked as a whole figure×1
SyntaxMinifigure, checked as a whole figure×1
Mr TangMinifigure, checked as a whole figure×1
FeiMinifigure, 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.