CAT_VALIDATION_ERROR_TOO_MANY_TAGS indicates the tags array on a product exceeds Snap's per-product limit. Reduce the number of tags to keep the product eligible for ingestion.
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.