Options for importing invoice batches from a supplier

Summary:
We have a requirement to import invoice batches from a specific supplier. So multiple invoice headers with their respective lines.

These invoices will be non-PO

What methods are available for doing this? Is cXML one header only or can we use multiple headers? Can this be done with OBN?

If we can't do this via cXML or OBN are there any other approaches we can follow to import invoice batches from a supplier?

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25D

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