How to add a action item using a Rest API rest/api/3/issue

[Rogerio]

I tring to create a issue using a post Rest API v3 /rest/api/3/issue.

My json is as: 

{
"fields": {
"project": {
"key": "TAS1"
},
"issuetype": {
"name": "Task"
},
"summary": "Checklist da Sprint [TAS1 Sprint 24]",
"priority": {
"name": "Medium"
},
"reporter": {
"accountId": "xxxxx"
},
"assignee": {
"accountId": "xxxx"
},
"duedate": "2025-10-18",
"description": {
"type": "doc",
"version": 1,
"content": [
{
"type": "taskList",
"content": [
{
"type": "taskItem",
"content": [
{
"type": "text",
"text": "Item de ação 1"
}
],
"attrs": {
"localId": "",
"state": "todo"
}
},
{
"type": "taskItem",
"content": [
{
"type": "text",
"text": "Item de ação 2"
}
],
"attrs": {
"localId": "",
"state": "todo"
}
}
]
}
]
}
}
}

But it don't work and return the status 400 (Bad request) and a respose {
"errorMessages": [
"INVALID_INPUT"
],
"errors": {}
}

Could you help me, please? I didn't find a solution.

[Bill Sheboy]

Hi @Rogerio 

That is not publicly supported yet, and it is not in the Atlassian Document Format (ADF) documentation.  Here is the suggestion to add the feature, which you may watch / vote for to see progress:

https://jira.atlassian.com/browse/JRACLOUD-85414

And...I recall from the original announcement article for action items people have found undocumented ways to add action items, so take a look if you want to try those.

Kind regards,
Bill