Reserve lists are generally valid for one year (or three years for specialists). The validity may be prolonged (by EPSO) according to the needs of the institutions. A decision will usually be taken shortly before the list expires and is published on the EU Careers website. 

The initial validity of a list starts from the moment successful candidates are notified about their placement on the reserve list. The initial validity is published on the Reserve lists page. 

Any delay in the publication of the list on the Reserve lists page has no impact on the recruitment process itself.