Unable to add deal on some company names, but fine with others?

Hi, I’ve tried importing company names to related project deals, but it’s not linking, when I import it also doesnt give option of certain columns to link to shown in the board. So I have tried to do this manually, but when I click on company accounts, and click on column of deals, some company accounts allow me to add deals, others do not ? Why is this ?

Thanks,

Paul