Lỗi tạo file *.MNL

[tuyen_it]

em bị lỗi này khi tạo file netlist :
************************************************** ******************************
*
* Create Netlist
*
************************************************** ******************************
Netlist Format: EDIF200
Design Name: C:\USERS\TUYEN\DOCUMENTS\ORCAD\STEPMOTOR.DSN
WARNING: Name contains illegal characters 'C-POL', changed to CMINUSPOL
WARNING: Name contains illegal characters 'DIODE BRIDGE_1423', changed to DIODE_BRIDGE_1423
ERROR [NET0011] Netlist failed or may be unusable.

mong các sư huynh chỉ giúp e giải quyết nó n ạ!
E mới học Orcad!