We created a subcontracting challan thru J1IF01. But the material was returned before 180 days w/out doing any job wok on it. So weu2019re reversing the challan with T.Code J1IF13 & selecting radio button u201CReverse Challanu201D. On saving system is giving err: u201CNumber Range generation failureu201D. Pls tell why this err is coming & how to resolve it?