The below error is showing in the job logs for a few projects and the project does not sync:
There was a problem syncing tasks for the CA PPM project:<Project Name> 500api.internalError API-1019 : Could not process the request due to internal error.
Release : 15.7.1, 15.8, 15.8.1
Component : CLARITY RALLY INTEGRATION
This issue happens when the milestone limit exceeds a certain amount, and no further milestones are able to be synced from Rally to Clarity.
This issue DE55120 is fixed in 15.9 and also patched in 126.96.36.199 and 188.8.131.52