To suppress standard leave request error messages

Dear Gurus,

I need to stop one error messages(No data stored for infotype 0105,employee xxxxx in this period) in the standard leave request application.

Already added the message class in the configure node as

HRTIM_ABS_REQ Error 117 No data exists for infotype &1, employee &2 in this period., Do not display.

But still in portal when iam trying to apply a leave it is throwing the same error.

Please help me out to resolve the issue

Regards,

Rizwan