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.
Minifig Head [Plain] [Vented Stud - 2 Holes]Pearl GoldPart 28621×1
Animals / Creatures
1 piece
Animal, Otter [Plain]Reddish BrownPart 67631×1
Bricks Curved
1 piece
Brick Curved 4 x 2 DoubleDark AzurePart 7547Element 6613435×1
Bricks Sloped
1 piece
Brick Sloped 1 x 4 with 1 x 2 CutoutTanPart 5654Element 6594554×1
Minifig Accessories
1 piece
Equipment Signal PaddleTanPart 3900Element 4225479×1
Plates
1 piece
Plate 2 x 3Olive GreenPart 3021Element 6031127×1
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.