This parameter specifies the number of days prior to the certificate expiration date that a warning message will be issued. IBM® Connect:Direct®. The default is 30 days. You can enter any value between 1 and 365. his parameter is only effective if CHECK.CERT.EXPIRE = YES and Connect:Direct Secure Plus has been enabled by specifying SECURE.DSN = Connect:Direct Secure Plus parameter filename.

Modifiable through MODIFY INITPARMS command: YES