Workarounds for consolidated PO from multiple requisitioning Business Units

Summary:

As per multiple metalink notes and community posts, Oracle doesnt allow requisition lines belonging to different Business units into a single Purchase Order. One PO can have lines belonging to same requisitioning BU and Procurement BU.

We need to understand if there are some workarounds in terms of business processes or technical customizations which can help lines consolidation into a single PO. What are the processes other customers are following to get around this limitation?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):