SM30 - Maintain more records

Hi,

I have generated a table maintenance for a Z table. At SM30 when I create New Entries I am able to update only 21 records at a single time though I copied 500 records from my excel file. Is there any way I can update all my records in my excel file at a single time instead of updating 21, 21, 21...?

Min 1000 records to update is my target. And User wants to do it all from SM30 screen.

Please let know the possible workaround.

Thanks,

Prabhu