You can remove the event message content from Spectrum OneClick using the Event Configuration (Tools --> Utilities --> Event Configuration). You need to identify the event code (Example: 0x6330070 from the attached screenshot) and remove the variables which you do not want to display in Spectrum. From the above screenshot, you can remove all the fields from "Level" to "Custom 5".
Make sure to have a copy of the fields that are going to be removed.
Once done, follow below steps to update the event configuration.
1. On the Event configuration window, select File --> Save All
2. On the OneClick console --> Explorer tab --> Under Spectrum Server (EX: lxspec01 (0x400000) --> Select Universe
3. On the right side contents panel --> Select List --> Filter for VNM (that would be your Spectrum Server name) and select it
4. On Component detail pane, under information tab expand SpectroSERVER control --> Click on Update Event Configuration
5. Open Spectrum OneClick Web UI --> Administration --> Update Event and Alarm Files --> Click on Reload
Hope this helps.
Regards,
Rajashekar