(M Series) The plane selection instructions G17 to G19 are in error. Reprogram so that the same 3 basic parallel axes are not specified simultaneously. This alarm is also generated when an axis that should not be specified for plane machining is specified, for example, for circular interpolation. (T Series) In the 0iTD, the helical interpolation option is needed to enable the specification of 3 or more axes for the G02/G03 block. Modify the program.