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.
Technic Axle and Pin Connector Angled #2 - 180°WhitePart 32034Element 6271870 or 4125554×2
Wheels and Tyres
2 pieces
Wheel Skateboard / TrolleyBlackPart 2496Element 6223673 or 4569104×2
Animal / Creature Body Parts
1 piece
Animal Body Part, Dog Bone [Short]WhitePart 93160Element 6360202 or 46002941 spare in the box×1
Minifig Headwear Accessories
1 piece
Headwear Accessory Crown / TiaraPearl GoldPart 33322Element 6605929 or 61731091 spare in the box×1
Supports, Girders and Cranes
1 piece
Support Round 2 x 2 x 2 Stand with Reinforced UndersideDark Bluish GrayPart 19798Element 6106283×1
Technic Pins
1 piece
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×1
Technic Special
1 piece
Technic Ball JointLimePart 32474Element 4624381 or 4290718×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
2 figures
Cinderella - Medium Blue Dress, Bright Light Blue Gloves, Hair BandMinifigure, checked as a whole figure×1
Prince Charming - Light Blue Shirt, Dark Red TrousersMinifigure, 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.