Spouse PCC

Hi, I am a primary applicant for PR under CEC. I have received PCC but not my spouse’s.
Is PCC for spouse is a mandatory document? What I have to do if I do not receive the PCC before last date of document submission (I already applied for PCC though)? Should I reject the invitation and enter to pool again (I have 453 points) ? or Should I submit all other documents with LOE for not having PCC for my spouse? .