private static void checkIfAlreadyExistsOneDegreeWithSameAcronym(DegreeUnit degreeUnit) { for (Unit unit : UnitUtils.readInstitutionUnit().getAllSubUnits()) { if (!unit.equals(degreeUnit) && unit.isDegreeUnit() && degreeUnit.getAcronym().equalsIgnoreCase(unit.getAcronym())) { throw new DomainException("error.unit.already.exists.unit.with.same.name.or.acronym"); } } }