Shopify sets a variant limit per product of 100 variants. With SPOD’s products, one color in one size is a variant. For example, a red Men's T-Shirt in XL is one variant. Certain products have more than 100 variants available. This means that for those products, you cannot publish all the variants at once.
To avoid this issue, we recommend a maximum of 12 colors per product you want to create. If you would like to have a certain product available in more than 12 colors, simply create a duplicate of the product with only the missing colors selected.