In case you want to read more about it Googliya: http://www.cic.gc.ca/english/resources/tools/perm/express/refuse.asp
"Under section A11.2, an officer may not issue a visa to an applicant who did not or does not meet the Express Entry minimum entry criteria (MEC) or did not or does not possess the qualifications for which they received their CRS score at the time when
the Invitation to Apply (ITA) was issued; or
the e-APR was received by IRCC."
"An applicant’s CRS score is automatically recorded in GCMS at the time when
their ITA is issued; and
their e-APR is submitted.
At the time of the e-APR, processing officers should compare both CRS scores to determine which of the following scenarios should be applied:
If the applicant’s CRS score at the time of the e-APR is equal to or higher than the lowest-ranked score in the round of invitations, the application will not be refused under section A11.2, as long as the applicant’s supporting documentation corroborates their claims and they continue to meet the MEC for Express Entry, including the requirements of the program to which they were invited to apply."