The corresponding ABAP class for communicating with HCI is /EDGE/CL_CS_CON_AEAT_HCI.
Important note: The communication AEAT, Vizcaya, Guipúzcoa, Álava version 1.1 and ATC version 1.0 with HCI communication using this class is not yet available. A Hotfix will be released as soon as possible to enable this communication through this ABAP class. In the meantime, the direct communication class and customizing will be used to perform the conciliations.