Increase the char length to show in report.

Hi all,

I am trying to print the sales invoice.That time only 6 characters are shown in the printed report.if more than 6 characters are there,then it's hidden. I don't know why the data is hiding like this.

Example: Item No: 34678945 (in Sales Line Table)
No: 346789(in the printed report) last two chars 45 are not shown.

Can you please guide me to solve this.