The variation theme specified for SKU [your SKU] is
different from the variation theme that already exists for this
product in the Amazon catalog. Your variation theme must be
identical to, or include, the existing theme [variation
Products that vary by attributes, such as size or color,
require a variation relationship and variation theme. The product
you are trying to upload already has a variation theme associated
with it ("existingTheme" in the error message).
To successfully upload the product, you must use a variation
theme that uses or incorporates this "existingTheme." Example: if
the product varies by Size and Color ("SizeColor" variation), then
you must specify a theme that includes both Size and Color. See
for more information about variation themes. See
for more information on using variation
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