Diagnosis
You want to maintain analysis variants for table analysis, or virtualfields for analysis variants. You must observe thefollowing naming convention.

Procedure
All entries that do not start with 'Y' or 'Z' are in the SAP namespace.If these entries are changed in the customer system, this isconsidered a modification. The changes will normally be overwritten atthe next upgrade. All other entries are in the customer namespace.Here, there are no entries that have been supplied by SAP.