cadence16.6生成网络表出问题，哪位大神帮忙指点一二

#1 ERROR(ORCAP-36032): Duplicate Reference Designator U1: SCHEMAtiC1, atom (5.40, 2.20).
#2 ERROR(ORCAP-36035): Multiple pin 1's which have different nets connected for U1: SCHEMATIC1, atom (5.40, 2.20).
#3 ERROR(ORCAP-36035): Multiple pin 2's which have different nets connected for U1: SCHEMATIC1, atom (5.40, 2.20).
#4 ERROR(ORCAP-36018): Aborting Netlisting... Please correct the above errors and retry.