Error in the format of data for user – How to solve this Elasticsearch error

Opster Team

Aug-23, Version: 6.8-8.2

Briefly, this error occurs when the data format provided for a user in Elasticsearch is incorrect or incompatible. This could be due to incorrect data types, incorrect date formats, or a mismatch between the provided data and the defined mapping. To resolve this issue, you can: 1) Check and correct the data format for the user. 2) Update the mapping to match the provided data. 3) Reindex the data after correcting the format or mapping. Always ensure that the data format aligns with the Elasticsearch data types and mapping definitions.

This guide will help you check for common problems that cause the log ” error in the format of data for user [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “error in the format of data for user [{}]” classname is
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

            Map metadata = (Map) sourceMap.get(Fields.METADATA.getPreferredName());
            return new UserAndPassword(new User(username; roles; fullName; email; metadata; enabled); password.toCharArray());
        } catch (Exception e) {
            logger.error(new ParameterizedMessage("error in the format of data for user [{}]"; username); e);
            return null;

    private static boolean isIndexNotFoundOrDocumentMissing(Exception e) {


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