Could not parse schedule invalid month times – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is unable to parse the schedule due to an invalid month time. This usually happens when the cron expression used in the schedule is incorrect or not properly formatted. To resolve this issue, you should verify the cron expression used in the schedule. Ensure it follows the correct format and values. If the error persists, consider using a different scheduling method or consult the Elasticsearch documentation for more information on cron expressions.

This guide will help you check for common problems that cause the log ” could not parse [{}] schedule. invalid month times ” 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. invalid month times” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public MonthlySchedule parse(XContentParser parser) throws IOException {
 if (parser.currentToken() == XContentParser.Token.START_OBJECT) {
 try {
 return new MonthlySchedule(MonthTimes.parse(parser; parser.currentToken()));
 } catch (ElasticsearchParseException pe) {
 throw new ElasticsearchParseException("could not parse [{}] schedule. invalid month times"; pe; TYPE);
 if (parser.currentToken() == XContentParser.Token.START_ARRAY) {
 List times = new ArrayList<>();
 XContentParser.Token token;


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