The instructions on the checklist (remember that in your application pack) to electronically sign it.i resubmitted it on 5th july , and i didnt manually sign it . i signed it electronically . and clicked on validate and it got validated . i havent received any message regarding the schedule A again !
I think what they are looking for now, at the end of the process is a signed proclamation. So the instructions this time state specifically ‘upload a signed copy’ to GCKey.
Note also that there is a brand new Schedule A form, which was released just last month!!
Update: BE CAREFUL!!
When I downloaded, there was a new form, dated June 2019, which does NOT have a Validate button!
However... I just rechecked and redownloaded it (from the 'get my application pack (for UK)' page on IRCC, and the 2018 version is now downloading from the link, which DOES have the validate button. I'm confused...!
Update... the version I got came from: https://www.canada.ca/content/dam/ircc/migration/ircc/english/pdf/kits/forms/imm5669e.pdf
However, the one directly from IRCC comes from here (and is older): https://www.canada.ca/content/dam/ircc/migration/ircc/english/pdf/kits/forms/eimm5669e.pdf
The difference being, the 'e' infront of the filename...?!?!
OK - FINAL update.
There is a thread here: https://www.canadavisa.com/canada-immigration-discussion-board/threads/form-imm5669-or-eimm5669.577480/
Asks the difference between imm5669 and eimm5669 - both SEEM to be acceptable. So you should be ok with the 'imm5669' (the one with the 'Validate' button) as it is what is included in the pack. Don't know how I ended up with the one I did!