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.
3,388 pieces in 681 part and color combinations, plus 10 minifigures.
LEGO counts 3,444 pieces. This inventory comes from a separate parts catalog and lists 3,445, including the 57 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.
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 Round 1 x 1 with Solid StudTrans-Clear ×66White ×9Trans-Clear is see-through: hold the piece up to a light.
Plate Round 1 x 1 with Solid StudYellow ×1Trans-Yellow ×26Trans-Yellow is see-through: hold the piece up to a light.
Panel 1 x 2 x 3 [Side Supports / Hollow Studs]Black ×1Trans-Brown ×1Trans-Brown is see-through: hold the piece up to a light.
Brick 1 x 1Dark Bluish Gray ×20Black ×4Dark Bluish Gray is lighter than Black.
Brick 1 x 3Black ×3Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick 2 x 4Black ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
21 more look-alike pairs
Brick Sloped 30° 1 x 2 x 2/3Black ×2Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes]Black ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Special 1 x 2 with Vertical Clip [Open O Clip]Black ×2Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Plate 1 x 1Dark Bluish Gray ×3Black ×8Dark Bluish Gray is lighter than Black.
Plate 1 x 2Black ×18Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 3Black ×8Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate 1 x 4Dark Bluish Gray ×12Black ×5Dark Bluish Gray is lighter than Black.
Plate 1 x 6Dark Bluish Gray ×19Black ×5Dark Bluish Gray is lighter than Black.
Plate 2 x 14Black ×4Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 2 x 2Black ×10Dark Bluish Gray ×35Black is darker than Dark Bluish Gray.
Plate 2 x 2 CornerDark Bluish Gray ×4Black ×3Dark Bluish Gray is lighter than Black.
Plate 2 x 6Black ×3Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Plate 3 x 3Black ×10Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Plate Round 1 x 1 with Solid StudBlack ×3Dark Bluish Gray ×10Black is darker than Dark Bluish Gray.
Plate Special 1 x 2 [Side Handle Closed Ends]Black ×16Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Dark Bluish Gray ×16Black ×3Dark Bluish Gray is lighter than Black.
Technic Brick 1 x 12 [11 Pin Holes]Dark Bluish Gray ×3Black ×4Dark Bluish Gray is lighter than Black.
Technic Brick 1 x 2 [1 Pin Hole]Dark Bluish Gray ×6Black ×2Dark Bluish Gray is lighter than Black.
Technic Brick 1 x 4 [3 Pin Holes]Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Tile 1 x 2 with GrooveBlack ×6Dark Bluish Gray ×6Black is darker than Dark Bluish Gray.
Tile 2 x 2 with GrooveDark Bluish Gray ×1Black ×17Dark Bluish Gray is lighter than Black.
Tile 2 x 3 with Movie Case 'Forever Sorting 2' PrintMedium BluePart 26603pr0012Element 6213358×1
Medium Lavender
1 piece
Tile Round 2 x 2 with Bottom Stud HolderMedium LavenderPart 14769Element 6062386×1
Pearl Titanium
1 piece
Technic Axle Connector 2 x 3 QuadruplePearl TitaniumPart 11272Element 6251539 or 6022718×1
Trans-Brown
1 piece
Panel 1 x 2 x 3 [Side Supports / Hollow Studs]Trans-BrownPart 87544Element 6507950 or 6239388Also in Black×1
Trans-Dark Blue
1 piece
Plate Round 1 x 1 with Solid StudTrans-Dark BluePart 6141Element 6514055 or 62402141 spare in the box×1
Trans-Red
1 piece
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 62084501 spare in the box×1
Minifigures
10 figures
Batman, Black Suit, Black Cape and Cowl, Utility Belt (3626cpr9998 Head)Minifigure, checked as a whole figure×1
Harley QuinnMinifigure, checked as a whole figure×1
Barbara Gordon in Pinstripe Vest and HolsterMinifigure, checked as a whole figure×1
The Joker with Bright Light Orange Shirt, Dark Purple Vest and Large Grin with Sharp TeethMinifigure, checked as a whole figure×1
Alfred Pennyworth, Balding, Sand Blue BatsuitMinifigure, checked as a whole figure×1
Batgirl, White Suit (Disco Outfit)Minifigure, checked as a whole figure×1
Batman, White Tuxedo, White Cape and Cowl (Disco Batman)Minifigure, checked as a whole figure×1
Robin in Disco OutfitMinifigure, checked as a whole figure×1
The Joker in Disco OutfitMinifigure, checked as a whole figure×1
Nightwing with Long Cape and WingsMinifigure, 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.