1 . COMMUNITY LAW - INFRINGEMENT BY PRIVATE PERSONS - JUSTIFYING GROUNDS - WRONGFUL ACT BY THE COMMISSION - NO EFFECT 2 . COMMUNITY LAW - GENERAL PRINCIPLES - PROTECTION OF LEGITIMATE EXPECTATIONS - CONDITIONS - UNDERTAKING BY COMMISSION OFFICIALS NOT TO APPLY COMMUNITY LAW - SITUATION NOT GIVING RISE TO A LEGITIMATE EXPECTATION 3 . ECSC - PRODUCTION - SYSTEM OF PRODUCTION QUOTAS - PRODUCTION IN EXCESS OF QUOTAS - JUSTIFYING GROUNDS - STATE OF NECESSITY OF A THIRD PARTY - NO EFFECT ( ECSC TREATY , ART . 58 ) 4 . ECSC - PRODUCTION - SYSTEM OF STEEL PRODUCTION QUOTAS - PRODUCTION IN EXCESS OF QUOTAS - FIXING OF A FINE - POWERS OF THE COMMISSION - SCOPE ( ECSC TREATY , ART . 58 ( 4 ); COMMISSION DECISION NO 2794/80/ECSC , ART . 9 )