Schematron using XPath 2.0
msn_surface:Command_Execution/msn_surface:command_duration/msn_surface:command_duration
The attribute @unit must be equal to one of the following values 'day', 'hr', 'julian day', 'microseconds', 'min', 'ms', 'ns', 's', 'yr'.
msn_surface:Command_Execution/msn_surface:expected_command_duration/msn_surface:expected_command_duration
The attribute @unit must be equal to one of the following values 'day', 'hr', 'julian day', 'microseconds', 'min', 'ms', 'ns', 's', 'yr'.
msn_surface:Surface_Mission_Information/msn_surface:surface_gravity/msn_surface:surface_gravity
The attribute @unit must be equal to one of the following values 'cm/s**2', 'km/s**2', 'm/s**2'.
msn_surface:Telemetry/msn_surface:auto_delete_flag
The attribute msn_surface:auto_delete_flag must be equal to one of the following values 'true', 'false'.
msn_surface:Telemetry/msn_surface:transport_protocol/msn_surface:transport_protocol
The attribute msn_surface:Telemetry/msn_surface:transport_protocol must be equal to one of the following values 'Data Product', 'SFDU', 'Team-generated Image'.