Starting today, reserved prefixes have been widened to include any phrase. You can no longer make any metafield namespace or metaobject type that includes -- (e.g., foo-- , foo--bar ). This only affects new metafield and metaobject definitions; existing definitions will continue to work as before. This change is intended to reserve the -- format for platform defined features such as shopify--{standard} and app--{your-app-id}.
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