ALV lines are deleted

Hello all,

We have implemented a report program which utilizes fm REUSE_ALV_GRID_DISPLAY. Altough we have not added particular commands or icons for deletion, on the default output list it is possible to select lines and delete these. The only thing we have changed in the field catalogue was changing one cell status to editable. We want to block row deletion because this is not a desired feature for our report. Which parameter should we check?

Thanks in advance,

Ali.