Hi, Andreas,

What do you have as values in both your Starting and Ending Item Number fields?

For example, if you entered a number or other code as a Starting value but left the Ending value 'blank', you would receive this message.

If you have a 'blank' as the ending value and what you really want is to show the 'last' possible value for an item code, in the Ending fiel, type as many z characters as the field will allow.