...
Each library that uses acquisitions in Sierra has a separate account unit (or accounting unit) that keeps financial information apart from other libraries. Each account unit includes a separate set of order records, vendor records and invoice records. Account units also come with access to reserves room and serials checkin functions in Sierra. Not all Marmot members have access to an account unit, and in a few cases the ordering functions of an account unit are being used by a different library than is using the serials checkin part of the same account unit.
https://marmot-support.atlassian.net/l/cp/MtjHmVia
...