Diagnosis
Master data can show up duplicates. The user identifies these and flagsthem by grouping. In this case, the number of data records to begrouped must be at least two.
For all other master data that appears only once in the system, thesystem generates a group on the instruction of the user. This groupcontains only one data record. The group can then be used forevaluation purposes.

Procedure
This is probably a program error that must be corrected.