Index options requires field type to be configured – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8-8.9

Briefly, this error occurs when the ‘type’ field is not configured for ‘index_options’ in Elasticsearch. The ‘type’ field is mandatory and defines the data type for the field. To resolve this issue, you need to specify the ‘type’ field in your mapping. For example, if you’re indexing text data, you would specify “type”: “text” in your mapping. Additionally, ensure that the ‘type’ you specify is compatible with the ‘index_options’ you’re using.

This guide will help you check for common problems that cause the log ” [index_options] requires field [type] to be configured ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: index.

Log Context

Log “[index_options] requires field [type] to be configured” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 private static IndexOptions parseIndexOptions(String fieldName; Object propNode) {
 Map indexOptionsMap = (Map) propNode;
 Object typeNode = indexOptionsMap.remove("type");
 if (typeNode == null) {
 throw new MapperParsingException("[index_options] requires field [type] to be configured");
 String type = XContentMapValues.nodeStringValue(typeNode);
 if (type.equals("hnsw")) {
 return HnswIndexOptions.parseIndexOptions(fieldName; indexOptionsMap);
 } else {


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