software-related services./ sap core s/4 migration./ this tender is about the migration of the sap core system from sap 6.0 ecc to sap s/4hana. in a company-wide preliminary project at salzburg ag, a brownfield approach was derived as a migration scenario. the term sap core includes the modules finance & controlling (including investment management, asset accounting and wbs elements), hr (hcm), maintenance, sales, purchasing and logistics. the existing modules are therefore also part of the migration or part of this tender. in addition, data cleansing or data archiving should be carried out if this makes sense and is possible (e.g. company codes, plants, storage locations, purchasing groups, master and transaction data that is no longer required should not be migrated).