Type type cannot be used in multi field – How to solve this OpenSearch exception

Opster Team

Aug-23, Version: 1-2.9

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Briefly, this error occurs when you’re trying to use a type that is not supported in a multi-field context in OpenSearch. Multi-fields are used for indexing the same field in different ways, but not all types are compatible. To resolve this issue, you can either change the type to one that is supported in a multi-field context, or remove it from the multi-field if it’s not necessary. Alternatively, you could create a separate field for this type if it’s crucial for your use case.

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This guide will help you check for common problems that cause the log ” Type [” + type + “] cannot be used in multi field ” to appear. To understand the issues related to this log, read the explanation below about the following OpenSearch concepts: index.

Log Context

Log “Type [” + type + “] cannot be used in multi field” class name is TypeParsers.java. We extracted the following from OpenSearch source code for those seeking an in-depth context :

 throw new MapperParsingException("no type specified for property [" + multiFieldName + "]");
 if (type.equals(ObjectMapper.CONTENT_TYPE)
 || type.equals(ObjectMapper.NESTED_CONTENT_TYPE)
 || type.equals(FieldAliasMapper.CONTENT_TYPE)) {
 throw new MapperParsingException("Type [" + type + "] cannot be used in multi field");
 }  Mapper.TypeParser typeParser = parserContext.typeParser(type);
 if (typeParser == null) {
 throw new MapperParsingException("no handler for type [" + type + "] declared on field [" + multiFieldName + "]");


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