where the economic operator ‘has been convicted by a final judgment (which has the force of res judicata in accordance with the legal provisions of the country) of any offence affecting his professional conduct’ (61) or ‘has been guilty of grave professional misconduct (proven by any means which the contracting authorities can demonstrate)’ (62), based on the concept of“grave professional misconduct” is defined in national legislation (63
i gcás ‘inar ciontaíodh [an gníomhaí eacnamaíochta] imbreith chríochnaitheach (a bhfuil fórsa res judicata aici de réir fhorálacha dlíthiúla na tíre) in aon chion adhéanann difear dá iompar nó dá hiompar gairmiúil’61 nó ‘ina bhfuil [an gníomhaí eacnamaíochta] ciontach in aon mhí-iompar gairmiúil tromaí (arna chruthú ar aon mhodh is féidir leis na húdaráis chonraitheoireachta athaispeáint)’62, bunaithe ar an gcoincheap “mí-iompar gairmiúil tromaí” mar