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.
Flame / Headwear Accessory Plume / Feather, Triple PointTrans-Dark PinkPart 64647Element 63032231 spare in the box×1
Flame / Headwear Accessory Plume / Feather, Triple PointWhitePart 64647Element 6289366 or 60976941 spare in the box×4
Flags, Banners and Signs
4 pieces
Flag 4 x 1 Wavy [First Wave Right]Dark PinkPart 4495bElement 6268863 or 4243677×4
Animals / Creatures
2 pieces
Animal, FrogCoralPart 33320Element 6399743×1
Animal, Hermit Crab, with Bar [Plain]OrangePart 69945Element 6481505×1
Technic Panels
2 pieces
Technic Panel 3 x 5 with Wall Mount HoleBlackPart 67139Element 6302094×2
Minifig Headwear Accessories
1 piece
Headwear Accessory Crown Long with BarGlow in Dark WhitePart 25516Element 63649861 spare in the box×1
Minifig Shields, Weapons, & Tools
1 piece
Tool CrowbarPearl GoldPart 92585Element 6056774×1
Technic Special
1 piece
Technic Disc 3 x 3Light Bluish GrayPart 2723Element 4667578×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
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.