Invalid availability value

Google requires availability to be one of: in_stock, out_of_stock, preorder, or backorder. Other values (like 'available' or 'IN_STOCK') are rejected.

Your storefront's stock-status values don't match Google's enumeration. Often a translation problem: your platform exports 'Available' but Google needs 'in_stock'.

1. Map your platform's stock values to Google's exact enums (lowercase, underscored).
2. in_stock | out_of_stock | preorder | backorder — those are the only valid values.
3. For preorders, also fill availability_date so Google knows when it ships.

• Capitalized values like 'In Stock'
• Using 'limited' or custom values not in the enum