root@sonic:~# config interface breakout Ethernet76 1x50G
Do you want to Breakout the port, continue? [y/N]: y

Running Breakout Mode : 1x100G[40G]
Target Breakout Mode : 1x50G

Ports to be deleted :
 {
    "Ethernet76": "100000"
}
Ports to be added :
 {
    "Ethernet76": "50000"
}
Breakout process got successfully completed.
Please note loaded setting will be lost after system reboot. To preserve setting, run `config save`.
root@sonic:~#
root@sonic:~#
root@sonic:~# config interface breakout Ethernet72 "4x25G[10G]"
Do you want to Breakout the port, continue? [y/N]: y

Running Breakout Mode : 1x100G[40G]
Target Breakout Mode : 4x25G[10G]

Ports to be deleted :
 {
    "Ethernet72": "100000"
}
Ports to be added :
 {
    "Ethernet72": "25000",
    "Ethernet73": "25000",
    "Ethernet74": "25000",
    "Ethernet75": "25000"
}
Breakout process got successfully completed.
Please note loaded setting will be lost after system reboot. To preserve setting, run `config save`.
root@sonic:~#
root@sonic:~#
root@sonic:~#
root@sonic:~# config interface breakout Ethernet72 "1x100G[40G]"
Do you want to Breakout the port, continue? [y/N]: y

Running Breakout Mode : 4x25G[10G]
Target Breakout Mode : 1x100G[40G]

Ports to be deleted :
 {
    "Ethernet72": "25000",
    "Ethernet73": "25000",
    "Ethernet74": "25000",
    "Ethernet75": "25000"
}
Ports to be added :
 {
    "Ethernet72": "100000"
}
Breakout process got successfully completed.
Please note loaded setting will be lost after system reboot. To preserve setting, run `config save`.
root@sonic:~#

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SWSS is failing during the creation of creation of breakout ports.
will be raising a JIRA after pushing these changes into naster branch.

======================================================================