See below the known issues in Timestamping Authority for Cryptographic Security Platform 1.4.0.

Large kmdata files not supported  (ATEAM-16338)

The evactl import-nshield command does not support kmdata files larger than ~100KB.

tsactl logs not forwarded to Splunk (EDM-13275)

When integrated with a Splunk server, PKI Hub does not forward logs recording tsactl commands. However, these logs can be browsed using the Grafana portal.