Implementation Status and Processing Status of SAP Notes 
The Note Assistant displays SAP Notes according to their implementation status and their processing status. The implementation status of an SAP Note is determined by the system according to existing information. The processing status is specified by the user.
Remember that the system checks whether the processing status you have set is consistent with the implementation status of the correction instructions.
For example, you can only set the processing status Completed if you have implemented all the relevant corrections (implementation status: Implemented completely or Cannot be implemented).
If the implementation status of an SAP Note then changes, so that it is no longer consistent with the processing status (after you import a Support Package, for example), the system flags the SAP Note as being inconsistent in the note overview.