Error in Response Spectrum Analysis

This is the RS definition

LC NO TYPE TITL
600 NONE RESP
RESP TYPE CLAS MOD
GBF2 II 0.02

and this is result in report

This is the RSA in DYNA

+PROG DYNA
HEAD Response Spectrum
EIGE 10 TYPE REST LC 1001
MODD D 0.02
LC 600
EXTR TYPE MIN MAX STYP
N 2001 2002 CQC
MY 2003 2004 CQC
MZ 2005 2006 CQC

It shows error in analysis: Function 600 has no loads