Harmonic Analysis Error : Additional Points required....

Hello,

I am running a harmonic analysis on an assembly. I have specified a base excitation accelartion load for frequencies 0, 1.3, 3.3, 8.3, 33.3 Hz.

In the Frequency range (in properties) I specified the range as 0 - 33.3 Hz. This should be sufficient to run the analysis. But I get an error saying - additional points are required in the definition of the exciting force to cover the upper range of frequency. Can some one please help me decipher this?

What am I missing here ?

Thanks for your help.

S.P

SolidworksSimulation