Handshake Failure in As2 B2B

Hi All,

Hope all are doing well.

we are working on B2B  AS2 Receiver Adapter for one of the Bank interface.

We used Client Certificate and our certificates in Trusted_CAs and all certificates were in Valid but we are getting handshake failure error.

same setup and certificates are working in the PI environment but not working in the PO environment.

we are getting below error while trying to send message to BANK.

can you please check the error as attachment and guide us to resolve this .

Thanks

Madhu T