Netlisting to PCB editor, Errors.

 Hi,

Im a Student who has to Create a PCB board for an end of year project. Im trying to creat a netlist in OrCad to PCB editor but i have 24 errors. Most are saying somthing similar to:

#21 ERROR(ORCAP-36036): Multiple pin 11's which have different nets connected for U1: SCHEMATIC1, PAGE1 (7.90, 0.40).
Check for incorrect packaging of all devices in U1.
#22 ERROR(ORCAP-36036): Multiple pin 4's which have different nets connected for U2: SCHEMATIC1, PAGE1 (6.30, 1.60).
Check for incorrect packaging of all devices in U2

 Can anyone help me out?