@DamlaNazYilmaz welcome to the Atlassian developer community.
The custom field types are tricky. There’s a great reference on our support site about Advanced field editing with detailed examples for pretty much anything you need to set. For the case of single-select list:
"customfield_11449" : { "value": "option3" }
or
"customfield_11449" : { "id": 10112 }
And just for the sake of having a complete JSON request body, here’s an example that works on my site:
{
"fields": {
"project": { "key": "TIS" },
"issuetype": { "id": "10000" },
"customfield_10432" : { "value": "Positive" },
"summary": "Main order flow broken",
"description": {
"type": "doc",
"version": 1,
"content": [
{
"type": "paragraph",
"content": [
{
"type": "inlineCard",
"attrs": {
"url": "https://devpartisan.atlassian.net/browse/NGEW-1"
}
}
]
}
]
}
}
}
Pay particular attention to the id
example where there are no quotes. There are some fields that require quotes for id
. Also, some fields require the use of operations inside the payload, like update
and add
.