Error: "wpg report schedule" occurs when several scheduled reports are created and it is not possible to schedule it on the report server

Take a look at etc\emerald.properties file on your Web application host and locate the org.quartz.dataSource.myDS.URL parameter. See if the IP address specified in the URL match the IP address of that host (or set to 127.0.0.1). Also check the values of report.server.hostname and report.server.port values under webapp\WEB-INF\web.xml. If the values are not set correctly, update them and restart the web application. Once configured, update each scheduled report to make any trivial change (for example the name) so that it is scheduled properly.