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.
450 pieces in 209 part and color combinations, plus 6 minifigures.
The official piece count includes the 65 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.
Look-alike colors in this set
These parts appear in this set in two colors that are easy to confuse. If you are one short in one color,
check whether it went in where the other color belongs. Each color has its own element ID in the parts list
at the back of the instructions.
Panel 1 x 2 x 3 [Side Supports / Hollow Studs]White ×1Trans-Clear ×3Trans-Clear is see-through: hold the piece up to a light.
Flag 4 x 1 Wavy [First Wave Right]Dark BluePart 4495bElement 6268948 or 4504647×1
Flag 4 x 1 Wavy [First Wave Right]Dark PinkPart 4495bElement 6268863 or 4243677×1
Rock
2 pieces
Rock 1 x 1 Crystal 5 PointTrans-Dark PinkPart 30385Element 6170289 or 6099532×1
Rock 1 x 1 Jewel / Gem 24 FacetTrans-Light BluePart 30153Element 6513972 or 6247792×1
Windows and Doors
2 pieces
Window 1 x 2 x 3 Shutter with Hinges and HandleDark PinkPart 60800aElement 6109902×2
Hinges, Arms and Turntables
1 piece
Turntable 4 x 4 Square Base, LockingWhitePart 61485Element 6619301 or 4611927×1
Minifig Upper Body
1 piece
Arm Mechanical with Clip [Thick Support]WhitePart 98313Element 6976864 or 6276864×1
Stickers
1 piece
Sticker Sheet for Set 41456-1[No Color/Any Color]Part 39115Element 6231531×1
Minifigures
6 figures
Dr. FoxMinifigure, checked as a whole figure×1
RickMinifigure, checked as a whole figure×1
Master FrownMinifigure, checked as a whole figure×1
Puppycorn, Half Open Mouth SmileMinifigure, checked as a whole figure×1
BrockMinifigure, checked as a whole figure×1
Unikitty, Dark Azure Foot, Open Mouth, Small PupilsMinifigure, 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.