Unbounded time intervals should not be used
Impact area
Performance
Severity
Medium
Affected element
Report
Rule ID
SF-0138
Impact
Failing to narrow the time period for a report is very likely to cause performance issues.
Remediation
Always use the starting and ending date values to limit the report scope.
Time to fix
30 min
References
See the Salesforce documentation resource: Improve Report Performance > Best Practices