After upgrading to 12.3 from a previous version, workflows that reference provided calendars (ex. UC_HOLIDAYS.US) will then fail with:
U00007081 Script function parameters Calendar and Calendar Event may only include the following characters: A-Z, 0-9, $, @, _, -, ., #.
Release : 12.3
Component : AUTOMATION ENGINE
Improper formatting of some calendar keywords using spaces.
Modify these CALE objects to change the name via the Java UI or an xml export.
Update to a fix version listed below or a newer version if available.
Automation.Engine 12.2.8 - Available
Automation.Engine 12.3.5 - Available
A problem has been fixed where existing Calendar Events with special characters and blanks in their names could not be referenced and led to failed executions.