Hi, I believe that in principle what you described is possible.
I assume your other order source would transorm through AIA to the EBM message structure.
Please bear in mind that milestones are automatically generated to AIA, you would need to somehow address branching the milestones to the originating system.
However, since you want your other order to only go to SOM, you might consider submitting the other order directly there?
Why have it do through COM when COM has no value-added in termes of orchestration (since you always want just one and the same function).
Also, pls consider that with some future evolution of O2A, SOM is likely to take a service order as in input, which would be transformwed from the commercial order.
The right choice here depends on the wider context of your requirement.
Hope this helps.
Thanks for your reply Viktor. We do not have SOM only COM. For provisioning we are creating the ebm and sending to AIA where it is sent to another provisioning system ( MSS). Anyway your response makes total sense. However there may be a need to send the order to provision and shipping and therefore we would like to orchestrate that process.