Displaying Blanks instead of '0'

Hi

I have a keyfigure which is QTY. When i execute a query, for some articles the value is showing as "0EA" and for some other articles its showing BLANK.

I have gone thrus some discussions in the forums to displayzeros. In query properties >display value >display zeros--> defaulted to "0" but still this doenst work.

In RSCUSTV4, i set to "0" that also doenst work.

1. What might be the reason? Its showing 0 QTY for some articles and BLANK for others.

2. How can i fix this?

Thanks

Annie