Lock NOT set for: Deleting master data attributes RSENQ002

Hi experts,

Even though there is no lock on masterdata, or masterdata is used in any of BPC cubes I cannot delete some of dummy masterdata in BPC characteristics.

This BPC dimension members are not entered on application side but they are extracted to infocube and SID's are generated automatically.

When I try to delete them I am getting error: RSENQ002.

Lock NOT set for: Deleting master data attributes

Message no. RSENQ002

Any idea?

Thanks in advance,

Ergin Ozturk