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 Bush 1/2 Smooth with Axle Hole Semi-ReducedLight Bluish GrayPart 32123bElement 6271165 or 42115731 spare in the box×3
Blue
2 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Light Nougat
2 pieces
Large Figure Hand, Fist with Axle Hole, 4 FingersLight NougatPart 93575Element 6116526×1
Large Figure Head Luke SkywalkerLight NougatPart 23194Element 6123895×1
Dark Tan
1 piece
Technic Axle 5 with StopDark TanPart 15462Element 6055631×1
Trans-Bright Green
1 piece
Large Figure Weapon, Lightsaber Blade 16L with Axle HoleTrans-Bright GreenPart 21987Element 6124022×1
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.