2482834 - Error occurred while obtaining the ABAP SID via LMDB connection on SAP Solution Manager 7.2

Step 'Set Up Single Sign-on' fails with the following error:
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Error occurred while obtaining the ABAP SID via LMDB connection

Found Java-SID for SSO ACL entry : <sid>
Found login.ticket_client for SSO ACL entry : <client>
The TicketKeystore/SAPLogonTicketKeypair-cert was succesfully read (690 bytes)
A failure occured while connecting to ABAP stack on <hostname> sys=<wrong instance number> client=<client number> user=SM_TECH_ADM
!! Exception : Connect to SAP gateway failed
Connection parameters: TYPE=A DEST=<Java Rfc client> ASHOST=<hostname> SYSNR=<wrong instance number> PCS=1
...
Error occurred while obtaining the ABAP SID via LMDB connection
!! Exception : Cannot retrieve the SID from the LMDB(cause=com.sap.sup.admin.abap.rfc.exception.RfcExecutionException An exception occured during the execution of the function 'MSS_GET_SY_SYSID'.)
...
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to SAP gateway failed
Connection parameters: TYPE=A DEST=<Java Rfc client> ASHOST=<hostname> SYSNR=<wrong instance number> PCS=1
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Image/data in this KBA is from SAP internal systems, sample data, or demo systems. Any resemblance to real data is purely coincidental.

SAP Solution Manager 7.2

Set Up Single Sign-on, MSS_GET_SY_SYSID, RFC_ERROR_COMMUNICATION, Connect to SAP gateway failed, WEBADMIN, Solman_Setup , KBA , SV-SMG-INS-CFG , Setup and Configuration of the Solution Manager system , Problem