Property null value cannot be null – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

Before you dig into reading this guide, have you tried asking OpsGPT what this log means? You’ll receive a customized analysis of your log.

Try OpsGPT now for step-by-step guidance and tailored insights into your OpenSearch operation.

Briefly, this error occurs when a required property in your OpenSearch configuration or query is set to null, which is not allowed. This could be due to a missing field in the data being indexed or a null value in a query. To resolve this, ensure all required fields are present in your data and that no null values are used in queries. If the error persists, check your OpenSearch configuration for any properties that may be incorrectly set to null.

For a complete solution to your to your search operation, try for free AutoOps for Elasticsearch & OpenSearch . With AutoOps and Opster’s proactive support, you don’t have to worry about your search operation – we take charge of it. Get improved performance & stability with less hardware.

This guide will help you check for common problems that cause the log ” Property [null_value] cannot be null. ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index, plugins.

Log Context

Log “Property [null_value] cannot be null.” class name is We extracted the following from OpenSearch source code for those seeking an in-depth context :

 String fieldName = entry.getKey();
 Object fieldNode = entry.getValue();
 switch (fieldName) {
 case "null_value":
 if (fieldNode == null) {
 throw new MapperParsingException("Property [null_value] cannot be null.");
 case "ignore_above":


How helpful was this guide?

We are sorry that this post was not useful for you!

Let us improve this post!

Tell us how we can improve this post?

Get expert answers on Elasticsearch/OpenSearch