Missing required parameter dims for field ” + name + ” – How to solve this Elasticsearch error

Opster Team

March-22, Version: 1.7-8.0

Before you begin reading this guide, we recommend you try running the Elasticsearch Error Check-Up which analyzes 2 JSON files to detect many configuration errors.

To easily locate the root cause and resolve this issue try AutoOps for Elasticsearch & OpenSearch. It diagnoses problems by analyzing hundreds of metrics collected by a lightweight agent and offers guidance for resolving them.

This guide will help you check for common problems that cause the log ” Missing required parameter dims for field ” + name + ” ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Missing required parameter [dims] for field [” + name + “]”classname  is DenseVectorFieldMapper.java We extracted the following from Elasticsearch source code for those seeking an in-depth context :

m -> toType(m).dims;
 ).addValidator(dims -> {
 if (dims == null) {
 throw new MapperParsingException("Missing required parameter [dims] for field [" + name + "]");
 if ((dims > MAX_DIMS_COUNT) || (dims < 1)) {
 throw new MapperParsingException(
 "The number of dimensions for field ["
 + name


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