The error message "MetaDirectorySearchObject::SearchUserObjects;LDAP Error (0x0000000b): Management limit exceeded indicates that the limit for search queries has been exceeded.
MetaDirectory has a default limit on search result lists for non-paged searches of 200.
If a search query has > 200 matches, this error message is returned to the requesting LDAP client (e.g. ProCall Client).
By changing the config/MetaDirectoryServer.xml file at the location <NonPagedLimit>200</NonPagedLimit>, this limit can be increased, e.g. by changing this value to 300.
Please note that setting this value too high can lead to considerable performance losses. The preferred solution is a precise search query and the resulting lower number of search matches.