Can't update the permission scheme of a project via the correct json?

[Piyush A (STR)]

How to update the permission scheme of a project to a new role id:

role_a_id - id of role source

role_a_id - id of role to replace to

def permissionSchemeUpdate(project_key,role_a_id,role_b_id):

    permission_schemes = jira.project_permissionscheme(project_key)

    print(f"project Key: {project_key} --> Permission Scheme: {permission_schemes.name}")

    scheme_url = f'{urlBase}/rest/api/3/permissionscheme/{permission_schemes.id}'

    response = requests.get(scheme_url, auth=(username, api_token), headers=headers)

    scheme_data = response.json()

    for scheme in scheme_data['permissions']:

        if role_a_id == scheme['holder']['value']:

            print(f"Role found for '{project_key}' at {scheme['permission']}")

            update_url = f'{urlBase}/rest/api/3/permissionscheme/{scheme_data["id"]}'

            scheme['holder']['parameter'] = role_b_id

            scheme['holder']['value'] = role_b_id

            response = requests.put(update_url, auth=(username, api_token), headers=headers, json=scheme_data)

            print(scheme_data['name'])

            if response.status_code == 200:

                print(f"Permission updated in scheme '{scheme_data['name']}'")

Error: Name required field not passed.