Validating of request request threw exception – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 7.17-8.9

Briefly, this error occurs when Elasticsearch encounters an issue while validating a request. This could be due to incorrect syntax, invalid parameters, or incompatible data types in the request. To resolve this, first, check the request syntax and parameters for any errors. Ensure that the data types in your request match the data types in your Elasticsearch index. If the error persists, check the Elasticsearch logs for more detailed information about the exception. This will help you identify the exact cause of the error and fix it accordingly.

This guide will help you check for common problems that cause the log ” validating of request [” + request + “] threw exception ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: request.

Log Context

Log “validating of request [” + request + “] threw exception” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

        final ActionRequestValidationException validationException;
        try {
            validationException = request.validate();
        } catch (Exception e) {
            assert false : new AssertionError("validating of request [" + request + "] threw exception"; e);
            logger.warn("validating of request [" + request + "] threw exception"; e);
        if (validationException != null) {