There is a command group 'az_reservations_reservation'. This group of commands could 'reservations reservation'. The group of commands has global parameter '--debug' which means 'Increase logging verbosity to show all debug logs.'. The group of commands has global parameter '--help -h' which means 'Show this help message and exit.'. The group of commands has global parameter '--only-show-errors' which means 'Only show errors, suppressing warnings.'. The group of commands has global parameter '--output -o' which means 'Output format.'. The group of commands has global parameter '--query' which means 'JMESPath query string. See <a href="http://jmespath.org/">http://jmespath.org/</a> for more information and examples.'. The group of commands has global parameter '--subscription' which means 'Name or ID of subscription. You can configure the default subscription using `az account set -s NAME_OR_ID`.'. The group of commands has global parameter '--verbose' which means 'Increase logging verbosity. Use --debug for full debug logs.'. This group contains a child command 'az_reservations_reservation_merge'.The syntax is: az reservations reservation merge --reservation-order-id
                                  [--no-wait {0, 1, f, false, n, no, t, true, y, yes}]
                                  [--sources]. The 1th example of the child command would be to use it to 'merge reservations', the syntax is: az reservations reservation merge --reservation-order-id 10000000-aaaa-bbbb-cccc-100000000005 --sources "['/providers/Microsoft.Capacity/reservationOrders/10000000-aaaa-bbbb-cccc-100000000005/reservations/30000000-aaaa-bbbb-cccc-100000000002','/providers/Microsoft.Capacity/reservationOrders/10000000-aaaa-bbbb-cccc-100000000005/reservations/30000000-aaaa-bbbb-cccc-100000000004']". The parameter '--reservation-order-id' is required. It is used to order id of the reservation.. The parameter '--no-wait' is optional. do not wait for the long-running operation to finish.. The parameter '--sources' is optional. format of the resource id should be /providers/microsoft.capacity/reservationorders/{reservationorderid}/reservations/{reservationid}  support shorthand-syntax, json-file and yaml-file. try "??" to show more.. 