for at least three months prior to the physical arrival to the customs territory of the Union until one month after the entry into the customs territory of the Union, in cases where specific CSMs needed to identify the relevant empty container events are not available in the carriers' electronic records; or
go ceann trí mhí ar a laghad roimh theacht isteach fisiceach an choimeádáin i gcríoch chustaim an Aontais go dtí mí amháin tar éis theacht isteach i gcríoch chustaim an Aontais, i gcásanna nach mbeidh na TSCanna sonracha is gá chun na himeachtaí ábhartha a bhaineann le coimeádán folamh a aithint ar fáil i dtaifid leictreonacha na n-iompróirí; nó