Weight and warehouse of variants

The UPS shipping plugin is not being activated whenever products have multiple variants. It appears to be because it's not detecting a warehouse.

I've set the warehouse for each product as a whole, but not for each individual variant- they all have the same warehouse.

Does anybody have any suggestions of how to fix this without adjusting each variant. I looked at the mass actions function, but it may be a bit over my head.

It seems like there should be a way to just apply the main warehouse to each variant automatically like it does for price... Also is there a way to just apply the same warehouse to ALL my products and variants or not use the warehouse function at all. I only have one location!

Problem solved! I think... I had the warehouse selected on under restrictions and by removing that it seems to just use my one and only warehouse as a default.