In some of those areas, Union legislation lays down detailed requirements to be complied with which require special skills and specific means for the performance of official controls.
I gcuid de na réimsí sin, leagtar síos i reachtaíocht an Aontais ceanglais mhionsonraithe atá le comhlíonadh agus a éilíonn scileanna speisialta agus modhanna sonracha chun na rialuithe oifigiúla a dhéanamh.