Solution : https://service.sap.com/sap/support/notes/1702097 (SAP Service marketplace login required)
Key words :
create users --> create user 'picacheuser', solution create user picacheuser manually, assign roles sap_xi_cache_serv_user sap_bc_webservice_pi_cfg_srv sap_sld_configurator, function 'bapi_user_actgroups_assign' table ''bapiret2', abap connection 'sapxicache<client>', central user administration active, central user administration, exchange infrastructure reason, symptom ctc step, user 'picacheuser'
Related Notes :
| 1673399 | PI Upgrade: No RFC authorization for user PIDIRUSER |
| 1450419 | Configuration Wizard: PI Upgrade EHP |
| 1321868 | Configuration Wizard: PI Upgrade |
| 1232259 | Security Note: Cache refresh with user change |