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.
228 pieces in 113 part and color combinations, plus 2 minifigures.
The official piece count includes the 9 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 Axle 4RedPart 3705Element 6129995 or 4265797×1
Tile 2 x 2 with GrooveRedPart 3068bElement 306821×1
Blue
3 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×3
Reddish Brown
3 pieces
Plate 2 x 6Reddish BrownPart 3795Element 4211247×1
Technic Axle 3 with StopReddish BrownPart 24316Element 6135494×2
Tan
3 pieces
Brick 1 x 1TanPart 3005Element 4113915 or 300505×2
Cone 1 x 1 [Top Groove]TanPart 59900Element 4529237×1
Bright Light Orange
2 pieces
Bar 4L (Lightsaber Blade / Wand)Bright Light OrangePart 30374Element 6376752×1
Weapon Lightsaber Hilt with Bottom RingBright Light OrangePart 64567Element 61342521 spare in the box×1
Green
2 pieces
Technic Brick 1 x 2 [1 Pin Hole]GreenPart 3700Element 6230235 or 4519977×2
Yellow
2 pieces
Tile Round 1 x 1 with Black Animal Eye PrintYellowPart 98138pr0364Element 64342071 spare in the box×2
Bright Green
1 piece
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)Bright GreenPart 4032aElement 6138624 or 4114430×1
Bright Pink
1 piece
Tile Round 1 x 1Bright PinkPart 98138Element 6284587 or 60553801 spare in the box×1
Flat Silver
1 piece
Creature Body Part, Horn (Unicorn)Flat SilverPart 89522Element 6214214 or 46128291 spare in the box×1
Trans-Clear
1 piece
Equipment Hourglass with Pearl Gold Sand PatternTrans-ClearPart 23945pat0003Element 6503206 or 6440804×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 71454-1[No Color/Any Color]Part 10102947Element 6434179×1
Minifigures
2 figures
JaydenMinifigure, checked as a whole figure×1
Mateo, Utility BeltMinifigure, 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.