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.
456 pieces in 136 part and color combinations, plus 5 minifigures.
The official piece count includes the 23 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.
Technic Pin 1/2 with FrictionRedPart 89678Element 63781201 spare in the box×5
White
13 pieces
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 SideWhitePart 22885Element 6603759 or 6218823×6
Plate 1 x 3WhitePart 3623Element 6552105 or 6550144×4
Plate 2 x 3WhitePart 3021Element 6550136 or 302101×3
Trans-Orange
12 pieces
Brick Round 2 x 2 with Axle HoleTrans-OrangePart 3941Element 6514283 or 6273154×1
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-OrangePart 54200Element 6245265 or 42443691 spare in the box×2
Dish 3 x 3 Inverted [Radar]Trans-OrangePart 43898Element 6507921 or 6343710×1
Tile Round 1 x 1Trans-OrangePart 98138Element 6514197 or 62747471 spare in the box×6
Wave / Power Blast Rounded Energy with Bar HandleTrans-OrangePart 27393Element 6581318 or 6353240×2
Nougat
11 pieces
Brick Curved 2 x 2 x 2/3NougatPart 15068Element 6441397×3
Brick Curved 4 x 2 No StudsNougatPart 93606Element 6441399×2
Creature Body Part, Dragon Head Lower Jaw with 6 Studs on Top, Spike, Teeth [Plain]NougatPart 76923Element 6483489 or 6441400×1
Tile 2 x 3NougatPart 26603Element 6330402×1
Tile Round 1 x 1 Half CircleNougatPart 24246Element 63281781 spare in the box×4
Trans-Red
8 pieces
Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope)Trans-RedPart 54200Element 6245252 or 42443631 spare in the box×8
Dark Purple
5 pieces
Brick Sloped Inverted 45° 2 x 1 with 2/3 CutoutDark PurplePart 2310Element 6431330×2
Tile 1 x 2 with GrooveDark PurplePart 3069bElement 4613192×2
Tile 2 x 2 with GrooveDark PurplePart 3068bElement 6057386 or 4225177×1
Yellow
3 pieces
Bracket 1 x 2 - 2 x 2YellowPart 44728Element 6117938 or 4615642×1
Technic Brick 1 x 2 [2 Pin Holes]YellowPart 32000Element 4201615 or 4160860×2
Dark Tan
2 pieces
Brick Sloped 45° 2 x 2Dark TanPart 3039Element 6184880×1
Tile 1 x 2 with GrooveDark TanPart 3069bElement 4496699×1
Blue
1 piece
Bracket 1 x 2 - 2 x 2BluePart 44728Element 6117968 or 6037412×1
Pearl Titanium
1 piece
Weapon Sword with Trans-Orange Blade PatternPearl TitaniumPart 3214pat0001Element 6503202 or 6430281×1
Trans-Purple
1 piece
Sphere with Opal Trans-Clear CoreTrans-PurplePart 92534pat0001Element 6435623×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 71793-1[No Color/Any Color]Part 10103440Element 6435256×1
Minifigures
5 figures
Imperium Claw HunterMinifigure, checked as a whole figure×1
Kai - Dragons RisingMinifigure, checked as a whole figure×1
Lloyd - Dragons Rising RobesMinifigure, checked as a whole figure×1
WyldfyreMinifigure, checked as a whole figure×1
Lord Ras, Pearl Gold Shoulder PadsMinifigure, 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.