Set organization when creating ticket via API call

Question

I'm creating issue via API call in Jira Service Management which works fine.

Now I want to add the organization on moment of creation, but can not get this working. I figured out that customfield_10500 is holding the organization, but trying to set in via the API call keeps ending in the following error:

{"errorMessages":[],"errors":{"customfield_10500":"The Organization ID must be a number"}}

My (sanitized) API-call:

curl --request POST \
--url 'https://xxxxxxx.atlassian.net/rest/api/3/issue' \
-H "Authorization: Basic xxxxxxx" \
--header 'Accept: application/json' \
--header 'Content-Type: application/json' \
--data '{
"fields": {
  "summary": "This is createdvia an API call",
  "issuetype": {
    "id": "10285"
   },
  "project": {
    "key": "xxx"
  },
  "customfield_10500": [
    {
    "ID": 4
    }
   ],
  }
}'

I tried to put the organization id between quotes, square brackets and using the name. But no luck until now.

Once the issue is created I can set the organization manual, but that is a manual intervention I want to avoid :-)

Prince Nyeche - ELFAPP · Accepted Answer

You need to set the id in an array as a number. The organization field is capable of containing other organization values, so as an array it just needs the value of the organization id. e.g

--data '{
"fields": {
  "summary": "This is createdvia an API call",
  "issuetype": {
    "id": "10285"
   },
  "project": {
    "key": "xxx"
  },
  "customfield_10500": [4]
  }
}'