Without more context it's difficult to be sure, but it could be saying that courses that are marked with this symbol have yet to be accredited (i.e. to receive approval from an external body). It may that the course will not be held if accreditation is not granted.

Professional bodies (e.g. in law, accountancy) may "accredit" certain courses which lead up to the appropriate professional exams - that is, they recognise those courses as being of the required standard and quality. Such accreditation may be being awaited in this case.