Could not parse schedule for unknown schedule type – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to understand the schedule type specified for a task. This could be due to a typo, incorrect format, or unsupported schedule type. To resolve this issue, you should first verify the schedule type you’re using is supported by Elasticsearch. Then, ensure the schedule is correctly formatted according to Elasticsearch’s documentation. If the error persists, check for typos or incorrect values in your schedule configuration.

This guide will help you check for common problems that cause the log ” could not parse schedule for [{}]. unknown schedule type [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “could not parse schedule for [{}]. unknown schedule type [{}]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  public Schedule parse(String context; String type; XContentParser parser) throws IOException {
 Schedule.Parser scheduleParser = parsers.get(type);
 if (scheduleParser == null) {
 throw new ElasticsearchParseException("could not parse schedule for [{}]. unknown schedule type [{}]"; context; type);
 return scheduleParser.parse(parser);


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