The wait time for an application for immigration (temporary or permanent) to Canada, before receiving a decision, can go anywhere between a few weeks to several months, and even years in some cases. It can therefore become nerve wracking to not be able to know the progress of the application and to know if there are any problems with it. Others receive a refusal on their application, and cannot know the details that led to the decision.
The only way to know the most detailed information of an application is by ordering GCMS notes. Below is a complete guide to understanding what they are, and how to interpret them. A sample is also given as to see what the notes look like.