Invalid parameter data type – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.7-8.9

Briefly, this error occurs when Elasticsearch receives a request with an invalid data type for a specific parameter. This could be due to a mismatch between the expected data type (like string, integer, etc.) and the provided one. To resolve this issue, you should first identify the parameter causing the error. Then, ensure that the data type of the value you’re passing matches the expected data type. If you’re using a script or application to send requests, check the code to ensure correct data types are being used.

This guide will help you check for common problems that cause the log ” Invalid parameter data type [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: parser, plugin.

Log Context

Log “Invalid parameter data type [{}]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 public Literal visitParamLiteral(ParamLiteralContext ctx) {
 SqlTypedParamValue param = param(ctx.PARAM());
 DataType dataType = SqlDataTypes.fromTypeName(param.type);
 Source source = source(ctx);
 if (dataType == null) {
 throw new ParsingException(source; "Invalid parameter data type [{}]"; param.type);
 if (param.value == null) {
 // no conversion is required for null values
 return new Literal(source; null; dataType);