Meta values can t be null field name – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.6-8.9

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 Elasticsearch operation.

Briefly, this error occurs when Elasticsearch tries to index a document with a null value in a field that doesn’t allow null values. This could be due to incorrect data input or a misconfigured mapping. To resolve this issue, you can either ensure that the field always has a value when indexing documents, or you can modify the mapping of the field to allow null values. Alternatively, you can use a script to handle null values during indexing.

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 ” [meta] values can’t be null (field [” + name + “]) ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “[meta] values can’t be null (field [” + name + “])” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 throw new MapperParsingException(
 "[meta] values can't be longer than 50 chars; but got [" + value + "] for field [" + name + "]"
 } else if (value == null) {
 throw new MapperParsingException("[meta] values can't be null (field [" + name + "])");
 } else {
 throw new MapperParsingException(
 "[meta] values can only be strings; but got "
 + value.getClass().getSimpleName()
 + "["


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?