Implementation of a common deadline for allowing the use of harmonised bands for electronic communications services, including for 5G, might however be affected in a particular Member State by problems relating to unresolved cross-border coordination issues between Member States or with third countries, to the complexity of ensuring the technical migration of existing users of a band; a restriction to the use of the band based on a general interest objective, to the safeguarding of national security and defence or to force majeure.
Mar sin féin, d'fhéadfadh sé go ndéanfaí difear i mBallstát ar leith do chur chun feidhme spriocdháta comhchoiteann maidir le húsáid bandaí comhchuibhithe le haghaidh seirbhísí cumarsáide leictreonacha lena n-áirítear do 5G, le fadhbanna a bhaineann le saincheisteanna i dtaobh comhordú trasteorann idir na Ballstáit nó le tríú tíortha, leis an gcastacht a bhaineann le hascnamh teicniúil a áirithiú d'úsáideoirí atá ar bhanda cheana; le teorannú ar úsáid an bhanda, bunaithe ar chuspóir leasa ghinearálta, le coimirciú na slándála agus na cosanta náisiúnta nó le force majeure.