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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.
Checking
11 pieces in 11 part and color combinations.
Builders who report a missing piece often find it in one of these places. Tick each one off as you look.
LEGO's request form asks for the set number (DOTS-MEGA-PACK-5) and each piece's element ID, both listed above.
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Tile 1 x 1 with Black Mickey Mouse Outline Print
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Tile 1 x 1 with Black Small Mickey Mouse Outlines Pattern Print
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Tile 1 x 1 with Black/Blue/White/Yellow/Bright Pink Mickey Mouse Outline Print
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Tile 1 x 1 with Dark Turquoise Mickey Mouse Outline, White/Black/Red/Bright Pink Lines Print
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Tile 1 x 1 with Mickey Mouse Glove/Hand, 2 Fingers Up on Yellow Background Print
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Tile 1 x 1 with Mickey Mouse Glove/Hand, Fingers Spread Out on Yellow Background Print
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Tile 1 x 1 with Mickey Mouse Glove/Hand, Pointing on Blue Background Print
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Tile 1 x 1 with Mickey Mouse Glove/Hand, Thumbs Up on Blue Background Print
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Tile 1 x 1 with White Dots on Red Background (Minnie Mouse Dress) Print
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Tile 1 x 1 with White Dots, Black Circles on Red Background (Mickey Mouse Pants Buttons) Print
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Tile 1 x 1 with White Mickey Mouse Outline, Black Background Print
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Tick each piece as you find it, or mark it missing.
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.
Request a replacement from LEGOMark 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.
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.
