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The following email address retrieved more than one active user in this Jira instance

Deleted user Jun 11, 2019

In a Jira server (using Crowd) the users are managed with Active Directory.

When I perform this REST GET call via the browser


I get the expected answer, but if I perform the same call via Java code I get the following error:

The following email address retrieved more than one active user in this Jira instance: username@domain.dom

Any idea of where this error message is coming from?



5 answers

1 accepted

Not sure if you are, but if you are looking to retrieve only one user, you may be better off using "Get user" (, rather than the search method.

i.e. https://jira.myserver.dom/rest/api/2/user?username=username@domain.dom

Edit: Looking at your response to another answer, looks like you are looking for multiple results. In that case, that error doesn't look like a Jira error to me, is it possible it's something in the code?


Multiple users per email address can lead to some confusion. When you use the Jira feature to create or comment Jira issues from an email account, the code that polls the email inbox to read incoming messages and create or comment Jira issues, makes some assumptions based on email addresses. For example the message to Jira is normally addressed to "" or something like that in the message "to" field, but, a "cc" field can be configured to become the assignee of an issue created from an email.

When that is done the assumption is that the first matching email address returned from a directory is the match for the assignee. When there are multiple users with one email address this can look kind of arbitrary and/or can end up being "not what was intended."

Anyway it is a subtle feature that can take some time to troubleshoot.

0 votes
Sean Yates Yates
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Oct 30, 2023

You have the option to register an account with a distinct username even if you use the same email address. Scratch Geometry Dash

0 votes
Randall Robertson
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Oct 04, 2019

Are you asking why calling the API via the browser responds differently than calling it from code?

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Jun 19, 2019

Hmm, the email address is not unique in Jira, it means that you can register an account with a unique username but the same email address.

I assume that the API is returning the latest entry and it is supposed to return only one entry.

Deleted user Jun 24, 2019

Yes you're right, the email address is not unique in Jira server.

I have then created more that one user with the same email address but I get the whole list of users without any error when using


I don't know how to test if it can be somehow related to the Crowd/AD integration

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