When migrating from Voyager to Alma, you may need to identify and resolve any duplicate (non-unique) Course Numbers. See the Voyager To Alma Migration Guide for additional help on how non-unique Course Numbers are migrated.
This query, which you can run using Voyager Prepackaged Access Reports, can help you identify duplicate Course Numbers.
SELECT COURSE.COURSE_NUMBER, Count(COURSE.COURSE_ID) AS CountOfCOURSE_ID
WHERE (((COURSE.COURSE_NUMBER) Is Not Null))
GROUP BY COURSE.COURSE_NUMBER
For other queries that may be useful, see my "Surviving Almanado: tips for a successful pre-implementation" presentation's Accompanying Materials.
If you need assistance in running custom SQL queries in Prepackaged Access Reports, consult the Voyager Customer Listserv.