I have a map where I test things and make blueprints. I have TONS of factories layed down, and came up to the point where I get the message ''could not pick up factory, too many factories picked up at once'' but I have zero in my inventory. I tried to use that purple factorissimo chest to try and robots are not finding anything. Any explanation to this? I assume I simply have too many factories that exist, irrelevant if it's in my inventory.

This only happens with yellow factories. Blue and red are ok. I deleted some yellow factories but I get the same message when trying to pick up any yellow factory.

Deleted factory buildings still count as picked up. You need to reuse old factory buildings instead of deleting them.

To get back the factory buildings you deleted, use the following command:
/give-lost-factory-buildings

This will give back any factory buildings that currently count as picked up (all 90 of them, so make sure you have enough space in your inventory).

thanks, the command gives me lots of factories, a few that had something built inside them but I still can't pick up the level 3 factory. I tried it several times.

Of course you can't pick up more factory buildings. You need to place down the other factory buildings first, the ones you deleted and got back.

I don't understand. When I used the command, I just destroyed the buildings, used the command, destroyed them again. I thought that would work...