payment appropriations which are needed to cover existing commitments or commitments linked to commitment appropriations carried over, where the payment appropriations provided for in the relevant budget lines for the following financial year are insufficient;
leithreasuithe íocaíochta a theastaíonn chun gealltanais atá ann cheana nó gealltanais atá nasctha le leithreasuithe faoi chomhair gealltanas a tugadh anonn a chumhdach, nuair nach leordhóthanach na leithreasuithe íocaíochtaí dá bhforáiltear sna línte buiséid ábhartha don bhliain ina dhiaidh sin;