1 . APPLICATION FOR A DECLARATION THAT A MEASURE IS VOID - APPLICATION CHALLENGING AN INDIVIDUAL DECISION UNDER THE ECSC TREATY NOT YET NOTIFIED OR PUBLISHED - ADMISSIBLE - IDENTICAL APPLICATION LODGED AFTER PUBLICATION OF THE DECISION - INADMISSIBLE ( ECSC TREATY , ART . 33 , THIRD PARA .) 2 . APPLICATION FOR A DECLARATION THAT A MEASURE IS VOID - APPLICATION BROUGHT BY AN UNDERTAKING AGAINST AN INDIVIDUAL DECISION UNDER THE ECSC TREATY WHICH IS NOT ADDRESSED TO IT - DECISION PERMITTING BENEFITS TO BE GRANTED TO ITS COMPETITORS ( ECSC TREATY , ART . 33 , SECOND PARA .) 3 . APPLICATION FOR A DECLARATION THAT A MEASURE IS VOID - INTEREST IN BRINGING AN ACTION - COMPLIANCE WITH THE CONTESTED DECISION - NO EFFECT ( ECSC TREATY , ART . 39 ) 4 . MEASURES ADOPTED BY THE INSTITUTIONS - DUTY TO STATE REASONS - SCOPE - ECSC DECISION ( ECSC TREATY , ARTS 5 AND 15 ) 5 . ECSC - AID FOR THE STEEL INDUSTRY - COMMISSION DECISION SUBJECTING THE GRANT OF STATE AID TO A REDUCTION IN PRODUCTION CAPACITY - AMOUNT OF THE REDUCTION FIXED ON AN ERRONEOUS BASIS - ILLEGAL ( GENERAL DECISION NO 2320/81 ; DECISION NO 83/398/ECSC , ART . 2 ( 1 ))