Shopify color and size not syncing to Facebook or Instagram

Changing an option named Color to a random metafield is not a reliable fix. First verify what the official channel actually transmitted for each variant.

Common causes

• The official channel may omit variant option values in Meta fields.
• Option names or category attributes are inconsistent.
• Variants are not grouped correctly in the catalog.

What to check first

1. Confirm Shopify variants have distinct Color and Size values.
2. Open multiple catalog items and inspect color, size and item group fields.
3. Check whether the values are missing on every variant or only some.

How to resolve it

1. Keep the source Shopify options correct.
2. Avoid writing unverified metafield namespaces.
3. If the official channel consistently omits the fields, use a verified mapping-capable feed tool or document the limitation.