Failed to parse term vectors request – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-7.15

Briefly, this error occurs when Elasticsearch is unable to parse a term vectors request due to incorrect syntax or invalid parameters. This could be due to a malformed JSON request or incorrect field names. To resolve this issue, you should first verify the syntax of your request. Ensure that the JSON is correctly formatted and that all field names are valid. If the error persists, check the Elasticsearch logs for more detailed information about the parsing error. You may also need to update your Elasticsearch version if it’s outdated.

This guide will help you check for common problems that cause the log ” failed to parse term vectors request. ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: request.

Log Context

Log “failed to parse term vectors request.” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 termVectorsRequest.type = parser.text();
 deprecationLogger.deprecate(DeprecationCategory.TYPES; "termvectors_with_types";
 } else if (ID.match(currentFieldName; parser.getDeprecationHandler())) {
 if (termVectorsRequest.doc != null) {
 throw new ElasticsearchParseException("failed to parse term vectors request. " +
 "either [id] or [doc] can be specified; but not both!");
 } = parser.text();
 } else if (DOC.match(currentFieldName; parser.getDeprecationHandler())) {
 if ( != null) {


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