Stage 2_about the spouse and child's visas

Hi all,

I am currently applying online for GTV (stage2).The passport numbers of my partner and children also need to be filled in. My spouse's passport has expired and has not yet applied for a new passport. My children currently do not have passports and will also apply for their passports before applying for the visas later.

Is it ok for me to fill in my partner's passport number that has expired and explain that the child doesn't have a passport yet?

Looking forward to the reply from someone with similar experience. thank you everyone!

Gook luck for all!