Sana expects variant images to be stored as productID_VariantID_1.jpg. This means that each variant has to have a separate image. But consider the following situation:
- The product is a t-shirt, it has 3 variants - Medium RED, Small RED, Large RED. In terms of image, the customer will ONLY have a red t-shirt as the only thing that changes is size.
Now according to Sana this requires 3 separate images to be stored. In the thumbnail section of product images the same red t-shirt image will show 3 times (which is weird).
Solution ideas:
1. Short team win: allow settings in the product detail page Image element to set "Show thumbnails for selected variant only", or "Show thumbnails for selected variant images and the common images only".
2. Long term : Allow some logic in Sana + ERP to map 1 image to multiple variants (This also comes up in PIM discussions for mapping the same image to multiple products - the concept is called Product masters).