When requesting information from an LDAP server (search), size limits in the LDAP server are preventing all information being returned to the client.
The "Hide Page" plugin can be used to overcome this issue. This extension works by performing a search with the max page size value set in the configuration panel.
When the number of results returned by the server exceeds the value of the max page size limit, the plugin will do subsequent queries to retrieve the remaining results and will collate the response entries to present the results as a single set returned by the backend server.
For further information please refer to the "Pagination-Hide Page" PDF available on the installation media in the folder Documentation | extensions.