Diagnosis
You are processing a BOM without reference to a change number, and wantto change the classification data.

System Response
The system checks whether the selected classification data has beenchanged historically (with a change number). If it has, you can onlychange the classification data of the BOM with reference to a changenumber.

Procedure
Since the selected classification data has already been changed withreference to a change number, you can only process the classificationdata if you process the BOM with reference to a change number (enteredon the initial screen).