Invalid sale_price_effective_date format

The date range for your sale isn't in Google's accepted ISO 8601 format. Without a valid range, the sale won't render correctly.

Date format mismatch. Google expects 'YYYY-MM-DDTHH:MM:SS+ZZZZ/YYYY-MM-DDTHH:MM:SS+ZZZZ' (start and end separated by /).

1. Format as ISO 8601 with timezone offset: '2026-05-15T00:00:00+0000/2026-05-22T23:59:59+0000'.
2. Always include the trailing forward slash separator between start and end.
3. If your sale has no defined end, you can omit the field — sale_price will still apply.

• Using human-readable dates ('May 15 - May 22')
• Forgetting the timezone offset