Missing required parameter dims for field name – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7.1-8.9

Briefly, this error occurs when the required parameter ‘dims’ is not provided for a field in Elasticsearch. This is often due to a misconfiguration or omission in the request body of the Elasticsearch operation. To resolve this issue, you should ensure that the ‘dims’ parameter is included and correctly configured in your request. Additionally, check your Elasticsearch mapping to ensure the field requiring ‘dims’ is properly defined. Lastly, ensure that your Elasticsearch version supports the ‘dims’ parameter as older versions may not.

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: index.

Log Context

Log “Missing required parameter [dims] for field [” + name + “]” class name 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