Trying to start the BPMN simulation in the editor, the error message: "To simulate this process at least one start event is required" appears. Additional, the convention check shows the warning: "The diagram contains an endless loop".
This is a known issue and has already been forwarded to our developers to get this fixed. It is caused by too many possible states and gateways within a diagram.
If you are affected by this issue and want to be kept up to date about this issue, please create a ticket in our Support Portal and reference the ticket number SPM-5527.
KBA , BPI-SIG-HUB , SAP Signavio Process Collaboration Hub , How To