If there is any change in the system ID or installation number, the already existing trusted connections are not working anymore.
The authorization test will fail to the respective destination in transaction SM59.
SAP NetWeaver, S4HANA
SMT1, SMT2, installation number change, system ID change, SID , KBA , BC-MID-RFC , RFC , XX-SER-SAPSMP-SYS , System Data , How To
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