Hi Andrew and Mark,
I can confirm that the message is intended behavior, right now Mobile doesn't support adding a parent record directly when picking a related parent record on a child. The process would be to add the Parent first and then come back to add the Child record.
It is something that is on the radar of the Mobile team, but that message would be correct. I actually don't think we have a UV request specifically on enabling adding a parent record directly from the child form, those other UV requests are more around how other parts of the behavior acts, one being on the Add a Child button showing up on a parent record on mobile and the others being about default settings for behavior when adding child records to parent records across the platform. I would still suggest making a UV request for that functionality, since it never hurts to make it clear that the need is there even if it is on their radar.
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Evan Martinez
Community Marketing Manager
Quick Base
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