This is a unique text string ie: 'NHEA' that UCAS uses to differentiate between your university's different campuses.
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1. You set up your campuses in the 'Campuses' tab in the app 'Courses'.

2. Campus identifiers must be unique.

For more information on the HESA Campus identifier - https://www.hesa.ac.uk/collection/c19051/a/campid
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