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Description
Although VUFIND-508 solves problems with most special characters in Solr IDs, slashes still seem to cause issues (in both VuFind 1.x and 2.x). This is the result of standard Apache functionality; it can be worked around by adding "AllowEncodedSlashes on" to the <VirtualHost> section used by VuFind.
http://www.jampmark.com/web-scripting/5-solutions-to-url-encoded-slashes-problem-in-apache.html
It sounds like Apache's "AllowEncodedSlashes" directive may be the most straightforward solution.