In accordance with the principle of proportionality, the period for keeping the documents should be differentiated depending on the total eligible expenditure of an operation.
I gcomhréir le prionsabal na comhréireachta, ba cheart an tréimhse maidir le doiciméid a choimeád a idirdhealú ag brath ar chaiteachas iomlán incháilithe oibríochta.