I just did a little bit R&D on this.
First of all sorry i misunderstood input values, i thought it is like 1/3009 (but it is I/3009)
At ECC level,
If you double click on each Associated Type of parameters, then you will notice that for CURRENTEXTERNALPROJE there are two Data Type (Char and Num) and for CURRENTINTERNALPROJE there are only one Data Type (Num).
So in the preview if you pass value only for CURRENTEXTERNALPROJE then you will get output.
(because that "/" value is special character.. right? since this parameter CURRENTEXTERNALPROJE has char data type also, so it will take as right value but in case of other paramter this special char value wont be accepted)
and if you try to pass value for CURRENTINTERNALPROJE it wont accept, since data type is only NUM.
Now you will be able to create MBO.
Rgrds,
Jitendra