Currently there is no easy way in our default search UI to find all identities who have more than one accounts from a single source. There are other ways like doing account link search or via accounts CSV etc. 

But there is a way to do find them (not pretty but still helpful) via search aggregation API. I found this somewhat easier if the result is small. If its a large set, you can always parse it to you liking. I am no coder 🙂 

Here is the call

POST https://{TENANTURL}/v3/search/aggregate

BODY

{
    "query": {
        "query": "*"
    },
    "indices": ['identities'],
    "aggregationsDsl": {
        "accounts": {
            "nested": {
                "path": "accounts"
            },
            "aggs": {
                "source id": {
                    "terms": {
                        "field": "accounts.source.id",
                        "min_doc_count": 2,
                        "size": 65536,
                    },
                    "aggs": {
                        "identities": {
                            "terms": {
                                "field": "_id",
                                "min_doc_count": 2,
                                "size": 65536,
                            },
                            "aggs": {
                                "accounts": {
                                    "top_hits": {}
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

The result will be something like this

{
    "aggregations": {
        "accounts": {
            "doc_count": 143280,
            "source id": {
                "doc_count_error_upper_bound": 0,
                "sum_other_doc_count": 0,
                "buckets": [{
                        "key": "2c918088719e0a5e0171a51ec1f45c33",
                        "doc_count": 13266,
                        "identities": {
                            "doc_count_error_upper_bound": 3,
                            "sum_other_doc_count": 13188,
                            "buckets": [{
                                    "key": "identity#2c918084719e5fda0171a635ed8465d9",
                                    "doc_count": 2,
                                    "accounts": {
                                        "hits": {
                                            "total": 2,
                                            "max_score": 1,
                                            "hits": [{
                                                    "_nested": {
                                                        "field": "accounts",
                                                        "offset": 6
                                                    },
                                                    "_score": 1,
                                                    "_source": {
                                                        "id": "2c918089784243b001785a6893314204",
                                                        "name": "[email protected]",
                                                        "accountId": "c5ea1cb6-6135-4773-b620-db710df1f448",
                                                        "source": {
                                                            "id": "2c918088719e0a5e0171a51ec1f45c33",
                                                            "name": "Azure Active Directory",
                                                            "type": "Azure Active Directory"
                                                        },
                                                        "disabled": false,
                                                        "locked": false,
                                                        "privileged": false,
                                                        "manuallyCorrelated": false,
                                                        "entitlementAttributes": {
                                                            "groups": [
                                                                "0478ac5b-e1ae-4a61-bc63-5bd386b34b1c"
                                                            ]
                                                        },
                                                        "created": "2021-03-22T14:48:26.168Z"
                                                    }
                                                },
                                                {
                                                    "_nested": {
                                                        "field": "accounts",
                                                        "offset": 5
                                                    },
                                                    "_score": 1,
                                                    "_source": {
                                                        "id": "2c91808676443055017644ecfaed1cfc",
                                                        "name": "[email protected]",
                                                        "accountId": "9d70e2a1-aafc-45c3-aa55-2b542a9b3bce",
                                                        "source": {
                                                            "id": "2c918088719e0a5e0171a51ec1f45c33",
                                                            "name": "Azure Active Directory",
                                                            "type": "Azure Active Directory"
                                                        },
                                                        "disabled": false,
                                                        "locked": false,
                                                        "privileged": false,
                                                        "manuallyCorrelated": false,
                                                        "entitlementAttributes": {
                                                            "groups": [
                                                                "296568fa-5a98-4fd3-b39e-394c4432e74b"
                                                            ]
                                                        },
                                                        "created": "2020-12-09T00:35:50.125Z"
                                                    }
                                                }
                                            ]
                                        }
                                    }
                                },
                                {
                                    "key": "identity#2c918086719e629d0171a639675771a8",
                                    "doc_count": 2,
                                    "accounts": {
                                        "hits": {
                                            "total": 2,
                                            "max_score": 1,
                                            "hits": [{
                                                    "_nested": {
                                                        "field": "accounts",
                                                        "offset": 5
                                                    },
                                                    "_score": 1,
                                                    "_source": {
                                                        "id": "2c918086745501130174552067e32ca8",
                                                        "name": "[email protected]",
                                                        "accountId": "0f7b23cb-2d16-4a53-a808-b3d305663851",
                                                        "source": {
                                                            "id": "2c918088719e0a5e0171a51ec1f45c33",
                                                            "name": "Google Suite",
                                                            "type": "Google Suite"
                                                        },
                                                        "disabled": false,
                                                        "locked": false,
                                                        "privileged": false,
                                                        "manuallyCorrelated": false,
                                                        "entitlementAttributes": {},
                                                        "created": "2020-09-03T18:00:21.220Z"
                                                    }
                                                },
                                                {
                                                    "_nested": {
                                                        "field": "accounts",
                                                        "offset": 4
                                                    },
                                                    "_score": 1,
                                                    "_source": {
                                                        "id": "2c9180847430c3350174345c589244e0",
                                                        "name": "[email protected]",
                                                        "accountId": "ce8cf36b-5a33-4bea-becd-8b795484720b",
                                                        "source": {
                                                            "id": "2c918088719e0a5e0171a51ec1f45c33",
                                                            "name": "Google Suite",
                                                            "type": "Google Suite"
                                                        },
                                                        "disabled": false,
                                                        "locked": false,
                                                        "privileged": false,
                                                        "manuallyCorrelated": true,
                                                        "entitlementAttributes": {
                                                            "groups": [
                                                                "296568fa-5a98-4fd3-b39e-394c4432e74b"
                                                            ]
                                                        },
                                                        "created": "2020-08-28T09:18:21.331Z"
                                                    }
                                                }
                                            ]
                                        }
                                    }
                                },
                                {
                                    "key": "identity#2c918089719e5fc30171a639cd6a2cff",
                                    "doc_count": 2,
                                    "accounts": {
                                        "hits": {
                                            "total": 2,
                                            "max_score": 1,
                                            "hits": [{
                                                    "_nested": {
                                                        "field": "accounts",
                                                        "offset": 5
                                                    },
                                                    "_score": 1,
                                                    "_source": {
                                                        "id": "2c91808674550113017455233ff632f4",
                                                        "name": "[email protected]",
                                                        "accountId": "c4714b3c-3a48-460c-ba80-bdb2791f3f92",
                                                        "source": {
                                                            "id": "2c918088719e0a5e0171a51ec1f45c33",
                                                            "name": "Active Directory",
                                                            "type": "Active Directory"
                                                        },
                                                        "disabled": false,
                                                        "locked": false,
                                                        "privileged": false,
                                                        "manuallyCorrelated": false,
                                                        "entitlementAttributes": {},
                                                        "created": "2020-09-03T18:03:27.606Z"
                                                    }
                                                },
                                                {
                                                    "_nested": {
                                                        "field": "accounts",
                                                        "offset": 4
                                                    },
                                                    "_score": 1,
                                                    "_source": {
                                                        "id": "2c918087742242470174244d59c977ca",
                                                        "name": "[email protected]",
                                                        "accountId": "74e864cb-7633-4c1e-884d-bdc8a1e10f3f",
                                                        "source": {
                                                            "id": "2c918088719e0a5e0171a51ec1f45c33",
                                                            "name": "Active Directory",
                                                            "type": "Active Directory"
                                                        },
                                                        "disabled": false,
                                                        "locked": false,
                                                        "privileged": false,
                                                        "manuallyCorrelated": true,
                                                        "entitlementAttributes": {
                                                            "groups": [
                                                                "296568fa-5a98-4fd3-b39e-394c4432e74b"
                                                            ]
                                                        },
                                                        "created": "2020-08-25T06:28:03.146Z"
                                                    }
                                                }
                                            ]
                                        }
                                    }
                                },
                                .............
                                .............
                                .............
                            ]
                        }
                    }
                ]
            }
        }
    }
}

Here you can see multiple accounts for a user from Azure AD

Similarly another user having duplicate accounts in Google Suite and Active Directory.

You can’t filter to get particular sources only but at least this will give you all users with more than one account from all sources.

Hope this helps!!! 


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