Why was it placed on hold, i wish, I was the case officer, nothing mention of why it is placed on hold.
GCMS notes are unlikely to reveal much. Very unlikely.
An applicant is far more likely to discern what is causing a problem by carefully and, most importantly, objectively reviewing the applicant's own application details, as well as the applicant's history, current situation, and other information related to who the applicant is and the life the applicant has been living.
Note: the reference to "
non-routine" illuminates nothing. Applications do NOT have a "
routine" or "
non-routine" status. All a note referencing the application is "
non-routine" means is that the agent making that note sees something has been done which is not something done to all applications. What matters is what that something is . . . or was. Once "
non-routine," always "
non-routine," even if whatever was done outside the regular stream of application processing was done in the past and is total history, and will have no more affect on how the application proceeds.
It is difficult to extrapolate much from references like "
on hold" without more context, since there is such a huge range of possibilities. It could be something very simple, perhaps the processing agent has made a referral, posed an inquiry, and is holding the application waiting for a response before taking the next step; this could be of very little import and have minimal impact on where the application goes from there. It could be the processing agent had a concern, has flagged the concern for the responsible citizenship officer to review, and likewise the application is thus being held pending a decision by the officer; this could also be of little import and have minimal impact, but it could also be a fork in the processing-path where a decision is made (as just one example) to initiate RQ-related non-routine processing. Speculating is shooting in the dark wearing ear plugs and a blindfold. Context matters. The applicant's details matter. Note, for example, if the applicant is PR-refugee who has traveled to the applicant's home country, "on hold" could easily mean the applicant has been referred to CBSA to investigate reavailment.
That is, it could be near nothing, or something, or something big. If the latter, odds are very high the applicant already knows or could easily figure out what the issue is. Big problems do not sneak up on applicants.