Error when attempting to update a fixVersion via Jira Rest API Edited

Hey guys, I am currently having issues when trying to update a fix version using the JIRA rest api and Guzzle.

The error I am getting is a 400 with the following message:

{"errorMessages":["Can not deserialize instance of out of START_ARRAY t (truncated...)


The code I am using looks like this:

$aPostData = array(
'update' => array(
'fixVersions' => array(
'set' => array(
'name' => $strTag

$jsonStuff = \GuzzleHttp\json_encode($aPostData);

$response = $cGuzzel->request('PUT',$strJiraAPI, ['headers' => ['Content-Type' => 'application/json'],
'auth' => [JIRA_USER, JIRA_PASS],



Any help would be greatly appreciated!

1 answer

0 votes
Josh Steckler Community Champion Jul 14, 2017

php :)

Can you be more specific about which REST endpoint you are trying to use? Are you updating the fixVersions field of an issue or are you modifying a fixversion on a project?

PUT /rest/api/2/issue/{issueIdOrKey}


PUT /rest/api/2/version/{id}

I'm assuming the first. I think the issue is malformed JSON. You have an extra array in there after 'set' => 

Suggest an answer

Log in or Sign up to answer
Community showcase
Published Jan 08, 2019 in Jira

How to Jira for designers

I’m a designer on the Jira team. For a long time, I’ve fielded questions from other designers about how they should be using Jira Software with their design team. I’ve also heard feedback from other ...

977 views 3 9
Read article

Atlassian User Groups

Connect with like-minded Atlassian users at free events near you!

Find a group

Connect with like-minded Atlassian users at free events near you!

Find my local user group

Unfortunately there are no AUG chapters near you at the moment.

Start an AUG

You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs

Groups near you