Proof of sibling for principal applicant and spouse?

[mummyrayyan]

I am the principal applicant for FSW EE and my spouse is also part of my application. We have received an ITA and after receiving the document checklist, they have asked us BOTH to provide proof of sibling in Canada as both of us has siblings there. However only I claimed points for a sibling, my husband did not get any points for siblings in Canada. So is it necessary to provide proof of sibling for BOTH my husband and I? Or only i need to provide the proof?