If the existing installation of version 10.0.12 still addresses the old external service of type DB_ARCM, follow the instructions in Version 10.0.0 up to 10.0.11, to provide the old migration schema. If the ARIS external service of type DB is already used, follow the instructions in ARCM - Installation Guide, chapter Add tenant schema of ARIS Risk & Compliance Manager, to provide the new migration schema.