Inconsistent SAP notes

Hi Experts,

There are few OSS notes which are identified as inconsistent by the client after upgradation to ECC 6.0

Could anyone please clarify what exactly it means by Inconsistent note.

Also,the inconsistent notes which are NOT applicable in ECC 6.0 as per SAP market place analysis, the status in SAP note browser (SNOTE) is maintained as 'Obsolete version implemented'.

For the inconsistent notes which are applicable also, the same status is maintained in snote.

Why is this so?

Please throw some light on this.

Thanks in advance!

Neha