Sale price effective date malformed

CAT_VALIDATION_ERROR_SALE_PRICE_EFFECTIVE_DATE_INVALID fires when sale_price_effective_date is missing the start or end timestamp, the dates are reversed, or the format does not follow ISO 8601 with a slash separator (start/end).

Snap Catalog Manager's product schema has format and value rules per attribute. This issue is typically: missing a required attribute for the category, an invalid enum value (e.g., 'XL' submitted where 'M, L, XL' is the valid set), out-of-range numbers, or attributes that conflict across the feed.

1. Look up the affected attribute in Snap Catalog Manager's product data spec.
2. Check whether the attribute is REQUIRED vs RECOMMENDED for your product category.
3. For enum-style attributes (gender, age_group, condition), use ONLY documented values exactly (case-sensitive).
4. For free-text attributes, stay within the character limit and avoid promotional language.
5. Re-submit and check the next processing cycle.

• Submitting case-mismatched enum values — most channels require exact case match
• Mixing attribute formats across products in the same feed — keep consistent