# {
#   'RS' => {
#     'P_ROOTCODE' => 'RS'
#   }
# }
ok 1
# {
#   'RC1XY' => {
#     'DAY1' => '1',
#     'P_MON_CODE' => 'X',
#     'P_NEW_MON_CODE' => 'Y',
#     'P_ROOTCODE' => 'RC'
#   }
# }
ok 2
# {
#   'RW12QW1X' => {
#     'DAY1' => '1',
#     'P_MON_CODE' => 'X',
#     'P_ROOTCODE' => 'RW12QW'
#   }
# }
ok 3
...
ok 9
1..9