FEH - Forward error handling for inbound transactions Configuration

Hello,

While following the CIG configuration guide for the forward error handling, I'm not able to insert the entries for the action class (chapter "how to define ECH process data). It seems that the objets like "CL_ARBCIG_ACTION_DSPTCHDELIVRY" or "CL_ARBCIG_ACTION_CMPNACKNLDG" must be present on table SEOCOMPO.

Does anyone know how to generated those classes? It seems that they're not generated yes. Were using SAP ERP ECC EHP8.

Thank you.