Profile differentiator value is too high for base Uid – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 8.2-8.9

Briefly, this error occurs when the profile differentiator value exceeds the maximum limit set for the base Uid in Elasticsearch. This could be due to incorrect configuration or an unusually high value. To resolve this issue, you can either reduce the profile differentiator value to fit within the acceptable range or increase the maximum limit for the base Uid. Additionally, ensure that your configuration settings are correct and that the values you’re using are appropriate for your specific use case.

This guide will help you check for common problems that cause the log ” profile differentiator value is too high for base Uid [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “profile differentiator value is too high for base Uid [{}]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 // Prevent infinite recursion. It is practically impossible to get this many clashes
 if (differentiator >= DIFFERENTIATOR_UPPER_LIMIT) {
 new ElasticsearchException("profile differentiator value is too high for base Uid [{}]"; uid.substring(0; index))
 // New uid by increment the differentiator by 1
 final String newUid = baseUid + "_" + (differentiator + 1);


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