How can i find only SH replication errors ?

[egid_la]

I'm currently running Splunk 6.5.3

I want to create a KPI based on search heads replication errors.

I found this search :

index="_internal" sourcetype=splunkd replicate log_level=ERROR component=SHCRepJob

I can see search heads on host fields but it seem to be too much result.

Have a better idea ?

How can i find all replications errors (lookup, etc ..) ?