Other libraries however have indicated a willingness to supply from electronic resources and have procedures in place to facilitate this. Few electronic journal providers have an archiving policy in place to ensure access into the future. The ongoing availability of a journal if the publisher ceases to exist, or the title moves to a different publisher, is also unresolved. This can leave libraries with no back issues if they cancel a subscription to an electronic title. There has been a move away from cataloguing electronic titles due to a perception that cataloguing these titles is too costly and is also unnecessary.
Many libraries rely on separate web lists rather than an entry in their local catalogue.
In some cases publishers are entering into exclusive arrangements with particular vendors. This makes it more difficult for libraries to subscribe to a single service to satisfy their core needs. If the vendor ceases to provide access to titles a library regards as core, then alternative sources need to be found for those titles. This can become an issue when the alternative source is an aggregation of journals which overlaps with other electronic services to which a library already subscribes. Individual titles which require individual subscription action is often considered too time consuming to maintain.