Array
(
    [0] => Array
        (
            [external_account] =>
            [data] => Array
                (
                )

        )

    [1] => Array
        (
            [external_account] => AAA
            [data] => Array
                (
                    [0] => Nbr de client
                    [1] => 1
                )

        )

    [2] => Array
        (
            [external_account] => AAA
            [data] => Array
                (
                    [0] => Nbr de client
                    [1] => 1
                    [2] => Nbr de client
                    [3] => 1
                )

        )

    [3] => Array
        (
            [external_account] => AAA
            [data] => Array
                (
                )

        )

    [4] => Array
        (
            [external_account] => AAA
            [data] => Array
                (
                    [0] => TTC
                    [1] => 1
                )

        )

    [5] => Array
        (
            [external_account] => AAA
            [data] => Array
                (
                )

        )

)