Each sales channel (eBay, Amazon, Shopify, etc.) has its own specific variation types and naming conventions. Before your products with variations can be published correctly, you need to tell 3Dsellers how your catalog variation types map to the variation types supported by each channel.

This is done inside Mapping Templates, under the Variation Settings section.

Variation Settings are located inside each Mapping Template, under the category sections.

To get there:

The Variation Settings panel is split into two columns:

For each variation type in your catalog, use the dropdown on the right to select the matching channel variation type.

Inside the Mapping Template, select the category you want to configure. The Variation Settings section appears on the right panel under the category's attribute fields.

You will see a list of all variation types that exist in your 3Dsellers catalog (left side). For each one, select the corresponding channel variation type from the dropdown (right side).

Example for eBay:

Click Save Changes or Save Changes & Exit to apply the variation mapping to the template.

Variation Settings are configured per category within the template. This means:

If your catalog products do not have variations, you can leave the Variation Settings section unchanged. It will have no effect on the listing.

Color + Size product (e.g. a T-shirt)
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You have variations "Color" and "Size" in your catalog. Map both to eBay's "Color" and "Size" types. Each combination (Red/S, Red/M, Blue/L, etc.) becomes a separate child SKU on the listing.
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Auto parts with "To Fit" compatibility
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Your catalog has a "To Fit" variation (e.g. "Fits Honda Civic 2018"). eBay Motors supports a "To Fit" variation type — map it directly. If the category doesn't support it, leave it as "Select" and use Item Specifics for compatibility data instead.
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Material-based variations (e.g. phone cases)
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Your catalog uses "Cover Material" (e.g. Silicone, Leather, Hard Plastic). Find the closest matching eBay variation type for the category. If there's no exact match, map it to the most suitable option or leave unmapped and handle it via Item Specifics.
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Same catalog variation, different channel names
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Your catalog uses "Colour" (British spelling). eBay expects "Color". Rather than renaming all your catalog variation types, just map "Colour" → "Color" in the template. No changes needed in the catalog itself.
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Multiple variation types, only some are relevant per category
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You sell both clothing and electronics. Clothing products use "Size" and "Color"; electronics use "Storage Capacity". In each category's Variation Settings, only map the types relevant to that category — leave the others as "Select".

Combining multiple variation types into one channel specific (workaround for channel limits)
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Some channels (like eBay) limit the number of variation types allowed per listing — often 2 or 3 maximum. If your products have more variation types than the channel allows (e.g. Color, Size, and Material), you can map two catalog variation types to the same channel variation type. This combines their values into a single channel-side specific, letting you stay within the limit while preserving the variation data.

For example, if you map both "Size" and "Material" to eBay's "Size" type, the values from both variation types will be concatenated — so a child SKU with Size "M" and Material "Leather" will appear on eBay as "M / Leather" under the single "Size" variation type.