To made a trasmission to my customer, I have the error "MDN details: null alias passed to getCertificate", I change the AS2 name (without "_" charapter), I change the certificate name (without "_") but the problem remains.
Have you got an idea where I can found the error ?
You should try to change the partner name and save.
After saving with the new name you can revert the change and it will work.
I think that it is a bug from Mendelson.