If you have newly configured this integration from Entuity to Truesight then it’s likely to possible that necessary class and mrl files are not activated/enabled in TrueSight cell’s KB. You can enable them with help of following steps
 
1) Make sure eye_event.baroc file is present in $MCELL_HOME\etc\pncell_XXXXX\kb\classes directory and add following entry in .load file located under same directory.
 
eye_event
 
2) Likewise, make sure eye_integration.mrl file is present in $MCELL_HOME\etc\pncell_XXXXX\kb\rules directory and add following entry in .load file located under same directory.
 
eye_integration
 
3) Compile the cell KB with below command followed by restart of the cell.
 
> mccomp -n <cell_name>
After cell restart you will see Entuity events in TrueSight console as expected

4) after checking the above steps, make sure the cell is up and running fine
> mcstat -n <cell name> 

(For cell HA, once primary cell(cell_name#1) is up, and then start secondary(cell_name#2) cell by syncing cells)

Entuity events data flow:
Entuity -> IIWS -> Remote cell -> TSIM cell-> TSPS or
Entuity -> IIWS -> TSIM cell-> TSPS (not suggested for a performance point of view)

5) Make sure IIWS server /etc/host has IIWS host and FQDN with correct IP address

6) Make sure IIWS mcell.dir has correct details about IIWS gateway and cell entry with expected port (path: %IIWS_HOME\Tomcat\webapps\imws\WEB-INF\etc\mcell.dir)

7) Make sure cell mcell.dir has correct details about IIWS gateway and cell entries  entry with expected port
(path: %MCELL_HOME%\etc\mcell.dir)


Please note : Entuity integration related rules and classes are not enabled by default and it should be enabled when Entuity integration is enabled