Solution : https://service.sap.com/sap/support/notes/1580460 (SAP Service marketplace login required)
Key words :
press button 'change authorization data' expand node 'basis - development environment' expand subnode 'abap, program flow checks' open field 'authorization group abap/4 pro' change, 'wf_admin' press button 'save' press button 'generate', integration server client - transaction pfcg role sap_xi_bpe_serv_user, function module swf_xi_bpm_auto_customize shows error 203, pressing button 'transport role', pressing button 'user comparison', 'change roles' screen update, open role sap_xi_bpe_serv_user, start transaction pfcg
Related Notes :
| 1403832 | Central Note: Upgrade Systems on SAP NetWeaver 7.3 |
| 1321868 | Configuration Wizard: PI Upgrade |
| 1309239 | Configuration Wizard: PI NetWeaver initial setup |