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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.
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-SERIES-3) and each piece's element ID, both listed above.
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Tile 1 x 1 with Bright Pink '?' Question Mark, Dark Purple Background Print
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Tile 1 x 1 with Bright Pink 'KEEP OUT!' on Magenta Background Print
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Tile 1 x 1 with Bright Pink Deer, Medium Azure Background Print
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Tile 1 x 1 with Bright Pink/Medium Azure Closed Lock on Dark Purple Background Print
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Tile 1 x 1 with Bright Pink/Medium Azure Open Lock on Dark Purple Background Print
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Tile 1 x 1 with Crystal Ball, Dark Purple Foot, Dark Turquoise Background Print
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Tile 1 x 1 with Dark Purple Heart, Medium Azure B.F.F., Bright Pink Background Print
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Tile 1 x 1 with Dark Purple Key, Magenta Stars, Bright Pink Background Print
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Tile 1 x 1 with Magenta Cat, Medium Azure Eyes Print
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Tile 1 x 1 with Medium Azure 'Shhh...' on Medium Lavender Background Print
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Tile 1 x 1 with Medium Azure Fox Print
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Tile 1 x 1 with Medium Lavender Fox Print
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Tile 1 x 1 with Text Bubble, Lavender Dots, Medium Azure Background Print
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Tile 1 x 1 with White Cloud, Magenta Stars, Medium Azure Background Print
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Tile 1 x 1 with White Sun on Bright Pink Background, Dark Purple Border Print
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Tile 1 x 1 with White/Lavender Moon, Magenta/Dark Purple 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.
