Unknown numeric property fieldName – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch tries to process a field as a numeric type, but the field is not recognized as such. This could be due to incorrect mapping or data type mismatch. To resolve this, you can check the mapping of your index to ensure the field is correctly defined as a numeric type. If the field is not meant to be numeric, adjust your query or data input accordingly. Alternatively, you can reindex your data with the correct mapping if the data type is wrong.

This guide will help you check for common problems that cause the log ” Unknown numeric property: [” + fieldName + “] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: rest, plugin.

Log Context

Log “Unknown numeric property: [” + fieldName + “]” class name is RestGraphAction.java. We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 } else if (MIN_DOC_COUNT_FIELD.match(fieldName; parser.getDeprecationHandler())) {
 minDocCount = parser.intValue();
 } else if (SHARD_MIN_DOC_COUNT_FIELD.match(fieldName; parser.getDeprecationHandler())) {
 shardMinDocCount = parser.intValue();
 } else {
 throw new ElasticsearchParseException("Unknown numeric property: [" + fieldName + "]");
 if (field == null) {
 throw new ElasticsearchParseException("Missing field name in graph vertices definition"; token.name());