The feature is available with SAP Focused Run 2.0 FP01 and higher.
The Simple System Integration (SSI) configuration process can be re-triggered via report RSRSM_SSI_RECONFIGURE_TS. This report offers the possibility to reconfigure all technical systems for a list of customer networks. The technical system selection can take the last SSI configuration status into account.
After starting the report RSRSM_SSI_RECONFIGURE_TS in transaction SA38, you get the following selection screen:
<network>;<extended-sid>~<type>;<date>;<time>;<overall status>;<step>/<activity>;<message type>;<message>