How to create intercompany PO , AP invoice and AR invoice for scenario, mentioned at summary

Summary:

PO is raised from AB Bu to CD Bu. AR invoice is raised from CB Bu through OIC as its third party system. CD Bu is booking travelling tickets to AB Bu and other out side customers
Current process: There is no intercompany relation in fusion for PO , PO matched invoice and AR invoices

Expected Process: These should be intercompany PO , Intercompany AP Invoice and Intercompany AR invoice

Could you please let us know how can we achieve this requirement in fusion?

Can we achieve this requirement through create intercompany PO?

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