This International Standard specifies the transactions between libraries or libraries and other agencies to handle requests for library items and following exchange of messages. This standard is intended to at first supplement and eventually succeed the existing international ILL standards ISO 10160, ISO 10161-1 and ISO 10161-2, which are based on the outdated open systems interconnection model. The introduction of the draft standard provides some background on the relationship of the new standard to the previous one.
My employer (LYRASIS) is a member of NISO (the accredited standards organization for information and documentation in the U.S.), and as the primary contact I see and consider ballots for standards issues that impact LYRASIS member libraries. The Interlibrary Loan (ILL) Application Protocol Specification (a.k.a. ISO 10160/10161) is up for its periodic review, and there is a bit of interesting movement on this standard. ISO 10160/10161 became a standard in 1993 so it predates the modern era of the web. The group shepherding the standard realized that progress had overtaken the specification and they started work on a reformulation of inter-machine ILL standards. This ballot and its supplemental documentation gives a view of the plans.