[chrisplough]

Yes - this is definitely possible -- in fact we've implemented it this way for a client already here's how it works:

You configure each OTM instance to utilize a different BPEL Domain (patches required) and to then point towards a different OTM domain. On the OTM side, you setup different external systems and web services within each domain, to point back to the respective BPEL Domain and EBS instance.

So, in the end, you have multiple EBS instances, one BPEL instance with multiple domains, and one OTM instance with multiple domains.

Now, this will work with the standards EBS/OTM integration provided by Oracle. However, whether that pre-packaged integration meets your needs is another issues. I'd recommend a careful gap analysis, as custom integration can often work better and reduce the implementation time.

Thanks,
Chris