How PDF is generated for Consumption Advice Standard PO/Releases?

Dear Friends,

For consigned inventory, after running Create Consumption Advice concurrent program, standard PO is getting created as per our expectation.

For the newly created PO, PDF is also available under the menu Inquire -> View Document.

As per the below mentioned metalink note, PO Output for Communication does not support Consumption Advice Standard POs / Releases.

Does 'PO Output For Communication' Support Purchase Orders / Releases Generated By 'Consumption Advice'? (Doc ID 806253.1)

For regular PO/Releases, we have a step in approval workflow to trigger PO Output for Communication program to generate PDF document.

But in our case, for consigned POs/Releases, wf_item_type and wf_item_key columns in PO_HEADERS_ALL table are NULL indicating that workflow is not triggered for them and also the document_creation_method is CREATE_CONSUMPTION.