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.
327 pieces in 121 part and color combinations, plus 2 minifigures.
LEGO counts 321 pieces. This inventory comes from a separate parts catalog and lists 336, including the 9 parts inside the minifigures; the two do not always count the same elements, so their totals differ. 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.
Animal / Creature Accessory, Horse Saddle with Stirrups and Top StudDark AzurePart 93086Element 6356470 or 6216889×1
Containers
1 piece
Box / Crate with Handholds 3 x 4 x 1 2/3Medium NougatPart 30150Element 6035734×1
Minifig Headwear
1 piece
Hair and Helmet, Long with Ponytail and Black Riding Helmet PatternRedPart 92254pat0001Element 6251222×1
Minifig Lower Body
1 piece
Leg Tall, SkeletonBlackPart 23769Element 6570742 or 6296799×1
Tools
1 piece
Brick and Axle Separator v2.0OrangePart 96874Element 6240515 or 4654448×1
Minifigures
2 figures
Mia - Blue Plaid Shirt, Dark Purple Skirt, Medium Azure BowMinifigure, checked as a whole figure×1
Olivia - Dark Pink Top, Bright Light Yellow SkirtMinifigure, 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.