ATCG requires the AtcgGeneratorSchema schema and the AtcgTestCodeSchema schema.
Load the:
AtcgGeneratorSchema under the schema in which the tested application runs, because the recording and replay both must execute in the context of the original application
AtcgTestCodeSchema schema under the AtcgGeneratorSchema schema
You can install multiple pairs of AtcgGeneratorSchema and AtcgTestCodeSchema schemas in the same JADE database, as long as each pair has different names.