'''$1''' is not a valid form.
MediaWiki:Pf autoedit invalidform/en
$1 is not a valid parameter.
MediaWiki:Validator error unknown argument/en
"$1" is not a valid title
MediaWiki:Mediafunctions-invalid-title/en
"$1" is not a valid site.
MediaWiki:Massmessage-parse-badurl/en
"$1" is not a valid title
MediaWiki:Workflows-property-validator-valid-title-error/en
"$1" is not a valid title.
MediaWiki:Apiwarn-invalidtitle/en
"$1" is not a valid page title.
MediaWiki:Massmessage-parse-badpage/en
$1 is not a valid page title.
MediaWiki:Srf-tree-rootinvalid/en
Page is not a valid category: $1
MediaWiki:Bs-parser-error-invalid-category-title/en
"$1" is not a valid election ID.
MediaWiki:Securepoll-invalid-election/en
"$1" is not a valid vote ID
MediaWiki:Securepoll-invalid-vote/en
"$1" is not a valid Item ID.
MediaWiki:Wikibase-wikibaserepopage-not-itemid/en
"$1" is not a valid data type.
MediaWiki:Wikibase-listproperties-invalid-datatype/en
"$1" is not a valid language code.
MediaWiki:Wikibasecirrus-entitieswithoutlabel-invalid-language/en
"$1" is not a valid entity type.
MediaWiki:Wikibasecirrus-entitieswithoutlabel-invalid-type/en
$1 is not a valid regular expression.
MediaWiki:Wbqc-violation-message-parameter-regex/en
User "$1" is not a valid user
MediaWiki:Workflows-property-validator-valid-user-error/en
$1 is not a valid credential type.
MediaWiki:Changecredentials-invalidsubpage/en
$1 is not a valid credential type.
MediaWiki:Removecredentials-invalidsubpage/en
$1 is not a valid item ID
MediaWiki:Wikibase-pageswithbadges-invalid-id/en
$1 is not a valid entity ID
MediaWiki:Wikibase-entityusage-invalid-id/en
'$1' is not a valid Lexeme ID
MediaWiki:Wikibase-lexeme-mergelexemes-error-invalid-id/en
"$1" is not a valid storage path.
MediaWiki:Backend-fail-invalidpath/en
"$1" is not a valid category name.
MediaWiki:Randomincategory-invalidcategory/en
Graph is not valid.
MediaWiki:Apierror-graph-invalid/en
