Description
The SLA notifications are sent out at the same time for 25%,50% and 75% completion.
Release or Environment
All releases.
Cause
The most probable root cause for this issue is that the 'Duration type' field on the SLA Definition is empty. It has to be either a 'user-specified duration' or a 'relative duration'.
When the 'Duration type' field is empty, then the SLA doesn't understand whether to consider the 'user-specified' duration or a 'relative duration'. So the duration will be considered as 0 and it triggers 25%,50% and 75% completion notifications all at the same time.
Resolution
Set the 'Duration type' field on the SLA Definition to either a 'user-specified duration' or a 'relative duration'.