This question concerns triggering a workflow in SAP by an event from a non-SAP system (Eistream) and vice-versa. How do I trigger a workflow in SAP by an event that is created in Eistream, and also, how do I transfer an event from SAP to Eistream to start a workflow there?
One option that is specific to workflow is WF-XML. This is an industry standard that allows you to trigger workflows in any WF-XML compliant system. It also allows the other system to call you back (this is because SAP is WF-XML compliant). You may need to check with Eistream to see if they are WF-XML compliant, but I think they are. If it's not, then don't worry, you can still use standard SAP techniques such as IDocs or RFC.
Dig Deeper on SAP integration
Find out how to configure clients so that the same version of an SAP workflow item is used when the workflow is triggered in separate clients.
An SAP user has created a user decision step in an SAP workflow item and wants to know how an end user can send an attachment to other users.
A SearchSAP.com reader wants to know how to hide the forward button in an SAP Business Workplace toolbar.