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.
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.
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Dark Turquoise ×1Medium Azure ×1Dark Turquoise is darker than Medium Azure.
Plate 1 x 2Black ×1Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Plate 2 x 2Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Technic Brick 1 x 2 [1 Pin Hole]WhitePart 3700Element 6619284 or 370001×2
Tiles Special
4 pieces
Tile Special 1 x 1 with Clip with Rounded EdgesWhitePart 15712Element 6348055 or 6054551×2
Tile Special Round 1 x 1 with Hollow BarWhitePart 20482Element 6186681 or 6178492×2
Bars, Ladders and Fences
3 pieces
Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]BlackPart 3484Element 6439039×1
Light Cover with Internal Bar / Bionicle Barraki Eye with Hole in BarBlackPart 4278Element 6448948×1
Bar Holder with Hole and Bar HandleWhitePart 23443Element 6322489 or 6290268×1
Hinges, Arms and Turntables
3 pieces
Hinge Plate 1 x 4 Swivel Top / Base - Hollow Clip [Complete Assembly]TanPart 1927Element 6416525×3
Bricks Wedged
2 pieces
Brick Wedged, Curved Triple 4 x 4 x 2/3, 2 StudsWhitePart 45677Element 4193068 or 456771×1
Brick Wedged, Curved Triple 4 x 4 x 2/3, 2 Studs with Light Bluish Grey Cat Face, Black Eyes, Bright Pink Nose PrintWhitePart 45677pr0030Element 6584816×1
Minifig Shields, Weapons, & Tools
2 pieces
Shield TriangularWhitePart 3846Element 6585187 or 6073416×2
Rock
1 piece
Rock 1 x 1 Jewel / Gem 24 FacetTrans-Dark PinkPart 30153Element 6513975 or 6247796×1
Stickers
1 piece
Sticker Sheet for Set 11215-1[No Color/Any Color]Part 10115681Element 6584437×1
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.