Processing incoming/outgoing payments via 3 IHC layers

Hello,

I am trying to configure payment processes via several IHC Centers. The scenario would be that payments from and to sub IHC2 should be processed via IHC1 and then IHC1 should reconcile with IHC (which has FI system as clearing partner).

I managed successfully to configure outgoing external and internal payments - and scenario IHC2- IHC1 and IHC is working without any problems. However I face issues with configuring incoming payments - eg credit note against internal customer is being paid from another sub IHC center or main IHC center to IHC2.

I suppose I am making the same mistake in route processing definition.

Have any of you seen similar scenario? I would be grateful for any tips and links to some configuration document, where there would be to sub IHC involved (scenario IHC-IHC2 is known to me)

Thank you in advance for your help,

Monika