I have several products with variations, based on color and size (classical example of t-shirts).

I can used "Options" (i.e., colors) and sub-options (i.e., size) to make the variations.

SKU is assigned at product level, and not at variation (combination of color + size).

I can create a "Property" for the EAN, but also this is at product level.

Is there a way to have an identification code at variation level?

Below an example.

Without this, for every order I need to manually check the content and verify which is the "real" product code as I need to re-order from an external supplier.

***** example *****

Product: T-Shirt

S/M - Black  EAN: 1000000000001

L/XL - Black EAN: 1000000000002

S/M - Red    EAN: 1000000000003

L/XL - Red   EAN: 1000000000004

thanks for any help