Seeburger AS2 - "There is no key entry with such alias in keystore"

Hi guys!

I try to configure Seeburder AS2 receiver adapter, but have problem with parameters of signing & encryption.

We have imported customer certificate correctly into keystore. Our customer awaits encoded (3des) & signed(sha1) messages. I have correctly configured the certificate for encryption TRUSTED\<view>\<entry>. However, when I set this setting also for signing the message, I get following error:

There is no key entry with such alias in keystore

Why? This is the same path as for encryption cert and it is found in the keystore... Or it has to be some other cert type?

Thanx a lot for answers!

Peter