My opinion here (as an inlander-spouse with an application in SIR):
The note is identifying the case as a SIR target. The "Closer review required" bit is because they are attempting to push as much of the SIR applications out of CPC-M as they can. The "Closer Review" happens at local VO's (who also are the VO's responsible for landing you). That VO is responsible for completing the QA work on the file before landing.
In order to allow for a more effective processing, in-Canada spousal applications already in the inventory will be pre-assessed to identify applications which are straightforward and may be streamlined, and which applications require a closer review.
Processing of the SCLPC applications in the inventory, other than those already referred to local offices for closer review, will be conducted by CPR. Cases already referred to local offices will be processed using usual procedures. In all applications, officers will ensure that an integrated search is performed as per normal procedures, with special attention to potential excluded relationships.
Cases may be referred to local offices if further review or an interview is required, as per section 5.34 of chapter IP 8 (PDF, 898.94 KB).[/i]
Section 6 & 7:
6 Local offices: processing of complex cases
Local offices will continue to process applications referred from CPR that require further review or an interview as per current guidelines. Local offices may also be involved in the processing of cases included in quality assurance exercises.
7 Finalization of applications
As part of the file management process, CPR will coordinate with regional local offices when finalizing applications to allow local offices to effectively manage the granting of permanent residence status to a significant number of applicants.
Processing of the SCLPC applications in the inventory, other than those already referred to local offices for closer review, will be conducted by CPR. Cases already referred to local offices will be processed using usual procedures.