The full list of FeedMender checks, by family

Prices and currency 23

We add the missing currency code, convert comma decimals to points, and flag sale prices that are not actually lower.

Code	Reads	Severity
`loyalty_price_in_price_field`	`price`	at risk
`price_format`	`price`	blocks
`price_missing`	`price`	blocks
`price_unparseable`	`price`	blocks
`price_zero`	`price`	blocks
`sale_price_currency_mismatch`	`sale_price`	blocks
`sale_price_effective_date_format`	`sale_price_effective_date`	blocks
`sale_price_effective_date_parts`	`sale_price_effective_date`	blocks
`sale_price_effective_date_reversed`	`sale_price_effective_date`	blocks
`sale_price_format`	`sale_price`	blocks
`sale_price_not_lower`	`sale_price`	at risk
`sale_window_without_sale_price`	`sale_price_effective_date`	at risk
`subscription_amount_format`	`subscription_cost`	blocks
`subscription_amount_missing`	`subscription_cost`	blocks
`subscription_currency_invalid`	`subscription_cost`	blocks
`subscription_length_invalid`	`subscription_cost`	blocks
`subscription_length_missing`	`subscription_cost`	blocks
`subscription_needs_category`	`google_product_category`	blocks
`subscription_period_invalid`	`subscription_cost`	blocks
`subscription_period_missing`	`subscription_cost`	blocks
`subscription_repeated`	`subscription_cost`	blocks
`subscription_too_many_fields`	`subscription_cost`	blocks
`subscription_week_on_mobile`	`subscription_cost`	blocks

Product identifiers 19

We validate every GTIN against the GS1 check digit, repair the ones that can be repaired, and catch valid-looking barcodes that Google rejects anyway because of a restricted prefix.

Code	Reads	Severity
`brand_missing`	`brand`	at risk
`brand_placeholder`	`brand`	blocks
`brand_too_long`	`brand`	blocks
`gtin_absent`	`gtin`	at risk
`gtin_absent_fallback`	`gtin`	at risk
`gtin_duplicate`	`gtin`	at risk
`gtin_formatting`	`gtin`	at risk
`gtin_invalid`	`gtin`	blocks
`gtin_repairable`	`gtin`	blocks
`gtin_suspect`	`gtin`	at risk
`id_duplicate`	`id`	blocks
`id_invalid_unicode`	`id`	blocks
`id_missing`	`id`	blocks
`id_too_long`	`id`	blocks
`identifier_exists_contradiction`	`identifier_exists`	blocks
`identifier_exists_value`	`identifier_exists`	blocks
`mpn_placeholder`	`mpn`	at risk
`mpn_suspicious`	`mpn`	underperforming
`mpn_too_long`	`mpn`	blocks

Titles 6

We strip the promotional text that gets products disapproved, and rebuild thin titles from brand, type and the attributes you already supplied, never from anything you did not.

Code	Reads	Severity
`title_all_caps`	`title`	at risk
`title_missing`	`title`	blocks
`title_promotional`	`title`	blocks
`title_thin`	`title`	underperforming
`title_too_long`	`title`	at risk
`title_whitespace`	`title`	underperforming

Descriptions 4

We strip HTML, cut what is over the limit, and flag descriptions too thin for Google to understand what the product actually is.

Code	Reads	Severity
`description_html`	`description`	at risk
`description_missing`	`description`	blocks
`description_thin`	`description`	underperforming
`description_too_long`	`description`	blocks

Images 25

We fetch every image URL and check it actually responds, is large enough for the 500x500 minimum that becomes mandatory on 2027-01-31, and is really the format its extension claims. Lifestyle images and video links are checked for shape, not fetched.

Code	Reads	Severity
`additional_image_count`	`additional_image_link`	at risk
`image_below_future_min`	`image_link`	at risk
`image_below_recommended`	`image_link`	underperforming
`image_format`	`image_link`	blocks
`image_format_mismatch`	`image_link`	blocks
`image_invalid`	`image_link`	blocks
`image_missing`	`image_link`	blocks
`image_multiple`	`image_link`	at risk
`image_non_ascii`	`image_link`	blocks
`image_placeholder`	`image_link`	at risk
`image_policy`	`image_link`	blocks
`image_scheme`	`image_link`	blocks
`image_too_large`	`image_link`	blocks
`image_too_many_pixels`	`image_link`	blocks
`image_too_small`	`image_link`	blocks
`image_unreachable`	`image_link`	blocks
`lifestyle_image_link_format`	`lifestyle_image_link`	blocks
`lifestyle_image_link_invalid`	`lifestyle_image_link`	blocks
`lifestyle_image_link_non_ascii`	`lifestyle_image_link`	blocks
`lifestyle_image_link_too_long`	`lifestyle_image_link`	blocks
`video_link_invalid`	`video_link`	at risk
`video_link_non_ascii`	`video_link`	at risk
`video_link_not_a_file`	`video_link`	at risk
`video_link_too_long`	`video_link`	at risk
`video_link_too_many`	`video_link`	at risk

Stock and availability 9

We map Dutch and French stock wording onto the four values Google accepts, and retire values that no longer exist in the specification.

Code	Reads	Severity
`availability_contradicts_quantity`	`availability`	at risk
`availability_date_missing`	`availability_date`	blocks
`availability_date_past`	`availability_date`	blocks
`availability_date_without_preorder`	`availability_date`	at risk
`availability_derived`	`availability`	blocks
`availability_missing`	`availability`	blocks
`availability_value`	`availability`	blocks
`availability_vehicle_ads_only`	`availability`	at risk
`expiration_date_past`	(varies)	blocks

Variants and attributes 22

We fix colour and size values that Google rejects, separate values that were run together, and flag variants that are not grouped, so each size stops competing against its own siblings.

Code	Reads	Severity
`color_code`	`color`	blocks
`color_concatenated`	`color`	blocks
`color_contains_digits`	`color`	blocks
`color_not_a_colour`	`color`	blocks
`color_possibly_concatenated`	`color`	at risk
`color_separator`	`color`	at risk
`color_single_letter`	`color`	blocks
`color_too_long`	`color`	blocks
`color_value_too_long`	`color`	blocks
`condition_contradicts_text`	`condition`	blocks
`condition_value`	`condition`	blocks
`is_bundle_value`	`is_bundle`	blocks
`item_group_duplicate_variant`	`item_group_id`	at risk
`item_group_id_missing`	`item_group_id`	at risk
`item_group_mixed_brands`	`item_group_id`	at risk
`item_group_no_variant_attribute`	`item_group_id`	at risk
`item_group_shared_url`	`link`	at risk
`multipack_value`	`multipack`	blocks
`size_holds_multipack`	`size`	blocks
`size_separator`	`size`	at risk
`size_system_value`	`size_system`	blocks
`size_type_value`	`size_type`	blocks

Categories 3

We map your own category strings onto the Google taxonomy once per catalogue rather than per product, and flag free text sitting in a field that only accepts official values.

Code	Reads	Severity
`gpc_invalid`	`google_product_category`	blocks
`product_type_count`	`product_type`	at risk
`product_type_too_long`	`product_type`	at risk

EU compliance 8

Unit pricing for food, drink and cosmetics, and EPREL energy labels, required since April 2025. This is the part most tools built for the US market skip.

Code	Reads	Severity
`certification_format`	`certification`	at risk
`certification_missing`	`certification`	at risk
`energy_class_legacy`	`energy_efficiency_class`	at risk
`unit_pricing_base_format`	`unit_pricing_base_measure`	blocks
`unit_pricing_base_missing`	`unit_pricing_base_measure`	at risk
`unit_pricing_measure_format`	`unit_pricing_measure`	blocks
`unit_pricing_missing`	`unit_pricing_measure`	at risk
`unit_pricing_unit_mismatch`	`unit_pricing_base_measure`	blocks

Shipping and returns 59

Shipping is mandatory in Belgium and the Netherlands. We check the composite syntax Google expects, the return window and its fees, free shipping thresholds, minimum order values, pickup cost and handling cutoff times.

Code	Reads	Severity
`free_shipping_threshold_country_invalid`	`free_shipping_threshold`	blocks
`free_shipping_threshold_country_missing`	`free_shipping_threshold`	blocks
`free_shipping_threshold_currency_mismatch`	`free_shipping_threshold`	blocks
`free_shipping_threshold_format`	`free_shipping_threshold`	blocks
`free_shipping_threshold_missing`	`free_shipping_threshold`	blocks
`free_shipping_threshold_too_many_fields`	`free_shipping_threshold`	blocks
`free_shipping_threshold_too_many_values`	`free_shipping_threshold`	blocks
`handling_cutoff_country_invalid`	`handling_cutoff_time`	blocks
`handling_cutoff_disable_invalid`	`handling_cutoff_time`	at risk
`handling_cutoff_time_missing`	`handling_cutoff_time`	blocks
`handling_cutoff_too_many_fields`	`handling_cutoff_time`	blocks
`minimum_order_value_country_invalid`	`minimum_order_value`	blocks
`minimum_order_value_country_missing`	`minimum_order_value`	blocks
`minimum_order_value_currency_mismatch`	`minimum_order_value`	blocks
`minimum_order_value_format`	`minimum_order_value`	blocks
`minimum_order_value_missing`	`minimum_order_value`	blocks
`minimum_order_value_surface_invalid`	`minimum_order_value`	blocks
`minimum_order_value_too_many_fields`	`minimum_order_value`	blocks
`minimum_order_value_too_many_values`	`minimum_order_value`	blocks
`pickup_cost_currency_unsupported`	`pickup_cost`	at risk
`pickup_cost_flat_rate_missing`	`pickup_cost`	blocks
`pickup_cost_format`	`pickup_cost`	blocks
`pickup_cost_out_of_range`	`pickup_cost`	blocks
`pickup_cost_repeated`	`pickup_cost`	at risk
`pickup_cost_too_many_fields`	`pickup_cost`	blocks
`returns_country_invalid`	`returns`	blocks
`returns_duplicate_policy`	`returns`	blocks
`returns_fee_missing`	`returns`	blocks
`returns_fee_type_missing`	`returns`	depends on the file
`returns_field_count`	`returns`	at risk
`returns_no_returns_with_fees`	`returns`	blocks
`returns_policy_url`	`returns`	blocks
`returns_restocking_fee_format`	`returns`	blocks
`returns_restocking_percentage_format`	`returns`	at risk
`returns_shipping_fee_format`	`returns`	blocks
`returns_too_many_overrides`	`returns`	blocks
`returns_two_restocking_fees`	`returns`	blocks
`returns_window_contradiction`	`returns`	blocks
`returns_window_days_format`	`returns`	blocks
`returns_window_days_missing`	`returns`	blocks
`shipping_combined_limit`	`shipping`	blocks
`shipping_country_invalid`	`shipping`	blocks
`shipping_dimension_format`	(varies)	blocks
`shipping_dimension_range`	(varies)	blocks
`shipping_dimension_unit`	(varies)	blocks
`shipping_dimensions_incomplete`	`shipping_length`	blocks
`shipping_dimensions_units`	`shipping_length`	blocks
`shipping_postal_code_unsupported`	`shipping`	at risk
`shipping_price_format`	`shipping`	blocks
`shipping_price_negative`	`shipping`	blocks
`shipping_price_out_of_range`	`shipping`	blocks
`shipping_time_format`	`shipping`	blocks
`shipping_times_without_price`	`shipping`	at risk
`shipping_too_many_fields`	`shipping`	blocks
`shipping_too_many_values`	`shipping`	blocks
`shipping_weight_format`	`shipping_weight`	blocks
`shipping_weight_range`	`shipping_weight`	blocks
`shipping_weight_unit`	`shipping_weight`	blocks
`ships_from_country_invalid`	`ships_from_country`	blocks

Links and crawlability 7

We check your landing page URLs are absolute and reachable, and read your robots.txt for all three Google crawlers, including AdsBot-Google, which ignores wildcard rules and is the reason for the disapproval nobody can explain.

Code	Reads	Severity
`link_hardcoded_gclid`	`link`	at risk
`link_invalid`	`link`	blocks
`link_missing`	`link`	blocks
`link_scheme`	`link`	blocks
`link_too_long`	`link`	blocks
`link_tracking`	`link`	underperforming
`link_valuetrack`	`link`	blocks

Other attributes 40

Field lengths, promotion codes with illegal characters, redirect domains, popularity rank, and attributes Google removed from the specification. Individually dull; collectively the difference between a feed that processes cleanly and one that does not.

Code	Reads	Severity
`ads_redirect_domain_mismatch`	`ads_redirect`	blocks
`archive_nested_too_deep`	(varies)	stops the scan
`attribute_removed`	(varies)	underperforming
`composite_schemas_merged`	(varies)	note
`delimiter_inconsistent`	(varies)	stops the scan
`delimiter_none`	(varies)	stops the scan
`delimiter_semicolon`	(varies)	note
`encoding_binary`	(varies)	stops the scan
`encoding_bom_removed`	(varies)	note
`encoding_not_utf8`	(varies)	note
`encoding_replacement_chars`	(varies)	at risk
`encoding_undecodable`	(varies)	stops the scan
`file_empty`	(varies)	stops the scan
`file_wrong_type`	(varies)	stops the scan
`gzip_unreadable`	(varies)	stops the scan
`header_control_chars`	(varies)	at risk
`header_duplicate`	(varies)	at risk
`header_empty`	(varies)	at risk
`header_missing`	(varies)	stops the scan
`json_malformed`	(varies)	stops the scan
`json_not_records`	(varies)	stops the scan
`json_ragged`	(varies)	at risk
`no_rows`	(varies)	stops the scan
`popularity_rank_decimals`	`popularity_rank`	blocks
`popularity_rank_format`	`popularity_rank`	blocks
`popularity_rank_range`	`popularity_rank`	blocks
`promotion_id_invalid`	`promotion_id`	blocks
`quote_unclosed`	(varies)	at risk
`quoted_newlines`	(varies)	note
`related_product_identifier_chars`	(varies)	blocks
`row_wrong_width`	(varies)	at risk
`rows_dropped`	(varies)	unmapped (sev)
`xlsx_unreadable`	(varies)	stops the scan
`xml_malformed`	(varies)	stops the scan
`xml_namespace_missing`	(varies)	at risk
`xml_no_items`	(varies)	stops the scan
`xml_unreadable`	(varies)	stops the scan
`zip_empty`	(varies)	stops the scan
`zip_multiple_files`	(varies)	stops the scan
`zip_unreadable`	(varies)	stops the scan

Assembled per attribute 22

These are not separate checks but one check written once and built for whichever attribute carries the fault, so a currency error reads the same on price as on sale_price. The example each family was proven with is shown.

Family	Reads	Severity
`*_currency_invalid`	(varies)	blocks
`*_cutoff_format`	(varies)	at risk
`*_format`	(varies)	blocks
`*_invalid_chars`	(varies)	blocks
`*_missing_apparel`	(varies)	at risk
`*_multiple_values`	(varies)	blocks
`*_session_url`	(varies)	at risk
`*_subattribute_missing`	(varies)	blocks
`*_subattribute_too_long`	(varies)	blocks
`*_subattribute_value`	(varies)	blocks
`*_timezone_format`	(varies)	at risk
`*_too_far_ahead`	(varies)	blocks
`*_too_few_values`	(varies)	at risk
`*_too_long`	(varies)	blocks
`*_too_many_values`	(varies)	blocks
`*_unknown_subattribute`	(varies)	blocks
`*_value`	(varies)	blocks
`*import_`	`file`	depends on the file
`*returns_\|_missing`	`returns`	blocks
`*returns_\|_value`	`returns`	blocks
`*robots_blocks_`	`link`	blocks
`*shipping_\|_reversed`	`shipping`	blocks

Every check, by family