ERROR While Configuring the SSL Key Pair SAP NW 7.3

I am trying to create new key pair entry to use for SSL. I am getting weird error, after importing certificate response ssl-credential entry goes invalid.

Below are list of step I carried prior getting error.

1) Deleted existing Java key pair from existing view ICM_SSL_<Instance_ID>

2) Generated new pair entry

3) Generated certificate sign request.

4) Sent to SAP CA at SAP Trust Center Service at service.sap.com/tcs.

5) Import certificate request.

And ssl-credential entry turns red , with error"This entry expired"

Please see screenshot below

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