Check deep object property and find duplicate value

I use the following code to find if there is duplicate value in property path:

return new Promise((resolve, reject) => {
            var data = [];
            Parser.parse()
             //configObj is the value from the screen shot
                .then((configObj) => {
                    configObj.forEach((providers) => {
                        _.each(providers, (provider) => {
                            _.each(provider, (entry) => {
                                for (var prop in entry) {
                                    if (_inArray(entry[prop].path, data)) {
                                        return reject(new Error(`Duplicate path ${entry[prop].path}`));
                                    }
                                    data.push(entry[prop].path);
                                }
                            })
                        })
                    })
                    resolve("validObject");
                }, err => {
                    reject(err);
                });

For example, this is the object configObj and as you can see I need to find duplicate in object 'replace' and object 'save' for the value in field 'path'; if they have the same value, it rejects with error; otherwise it resolves the promise. Is there is more elegant way to write it?

In this example, the path is different (test2 & command1) but it can also be the same.

update

[
  {
    "providers": [
      {
        "replace": {
          "path": "command1",
          "function": "updateResources",
          "method": "post"
        },
        "save": {
          "path": "test2",
          "function": "updateResources",
          "method": "post"
        }
      }
    ]
  }
]