I think this is similar to Bug 12848 : Hotlinked searches from detailed record does not respect OPAC_SEARCH_LIMIT. Here's an excerpt from the apache config for each opac URL: ACLL: ServerName acll.bywatersolutions.com SetEnv OPAC_SEARCH_LIMIT branch:ACLL RequestHeader add X-Koha-SetEnv "OPAC_SEARCH_LIMIT branch:ACLL" CCCLL: ServerName catalog.cccpllib.org ServerAlias ccll.acll.bywatersolutions.com SetEnv OPAC_SEARCH_LIMIT branch:CCCLL RequestHeader add X-Koha-SetEnv "OPAC_SEARCH_LIMIT branch:CCCLL" And here are the branch groups: select branchcode, branchname, branchrelations.categorycode from branches inner join branchrelations using (branchcode) order by categorycode, branchcode; +------------+------------------------------------------------+--------------+ | branchcode | branchname | categorycode | +------------+------------------------------------------------+--------------+ | Computer | Computer Use Only - Alameda County Law Library | ACLL | | DUB | Dublin Satellite Location | ACLL | | Hay | Hayward Branch | ACLL | | Oak | Oakland | ACLL | | MAR | Martinez | CCCLL | | PIT | Pittsburg Branch | CCCLL | | RICH | Richmond Branch | CCCLL | +------------+------------------------------------------------+--------------+ The following search is from the acll.bywatersolutions.com domain, i.e. it should only be returning search results for the branches 'Computer', 'DUB', 'Hay' and 'Oak', but the branch 'Martinez' (i.e MAR) is showing in the "Holding libraries" facet. http://acll.bywatersolutions.com/cgi-bin/koha/opac-search.pl?idx=su%2Cphr&q=ethics
Looking back at this, I think that it may simply be an instance of Bug 12848 -- that's where the initial URL came from. I do wonder whether OPAC_SEARCH_LIMIT should be implimented by injecting the branch limits into the URL if they don't already exist.
*** This bug has been marked as a duplicate of bug 12848 ***