How to create a new Bitbucket pull request via API?

Question

I'm trying to create a pull request on Bitbucket Server via Rest API, following this documentation. No matter what I try, I get a (400) Bad Request. error. I found this answer and used the body text from the answer (of course, replacing my information like the repo, branch, etc.):

{
    "title": "My new PR",
    "description": "This is my new PR.",
    "state": "OPEN",
    "open": true,
    "closed": false,
    "fromRef": {
        "id": "refs/heads/this-is-my-branch",
        "repository": {
            "slug": "my-repo",
            "name": 'My repo',
            "project": {
                "key": "KE"
            }
        }
    },
    "toRef": {
        "id": "refs/heads/master",
        "repository": {
            "slug": "my-repo",
            "name": 'My repo',
            "project": {
                "key": "KE"
            }
        }
    },
    "locked": false,
    "reviewers": [
        {
            "user": {
                "name": "jeremywat"    
            }
        }
    ]
}

This is the request (I'm using PowerShell):

Invoke-RestMethod -Headers @{Authorization = "Basic $BasicAuth"} -Body $JsonBody -ContentType 'application/json' -Method POST -Uri https://my-bitbucket-server.com/rest/api/1.0/projects/KE/repos/my-repo/pull-requests

The example provided in the Atlassian documentation includes some additional information in the request body and I tried including all that info as well, but still receive the same (400) Bad Request. error.

I know the credentials ($BasicAuth) are correct because I can get PRs, comment on PRs, etc. via the API with the same credentials. I can also create a new PR from the Bitbucket web interface.

So can anyone tell me what I'm doing wrong and what's the correct way to accomplish this?

Answer 1

The problem was I was putting the project node inside the repository node (which is how it's done in the documentation). Looking at this answer, the project and repository nodes are separate elements so I tried that and it worked this time:

{
    "title": "My new PR",
    "description": "This is my new PR.",
    "state": "OPEN",
    "open": true,
    "closed": false,
    "fromRef": {
        "id": "refs/heads/this-is-my-branch",
        "repository": "my-repo",
        "project": {
            "key": "KE"
        }
    },
    "toRef": {
        "id": "refs/heads/master",
        "repository": "my-repo",
        "project": {
            "key": "KE"
        }
    },
    "locked": false,
    "reviewers": [
        {
            "user": {
                "name": "jeremywat"    
            }
        }
    ]
}