Message "XCOMM0780E Txpi 422: Open error: <> errno = 129 errno2 = -1073019725" was received when performing a AT-TLS secured transfer.
XCOM r12.0 for z/OS
Specifying SECURE_SOCKET=YES when trying to perform a AT-TLS transfer.
Specify SECURE_SOCKET=NO when trying to perform a AT-TLS secured transfer from XCOM r12.0 for z/OS to another XCOM r12.0 for z/OS.
You would need to specify SECURE_SOCKET=YES if you initiate a AT-TLS secured transfer from XCOM r12.0 for z/OS to any other remote XCOM systems.