Is possible to create a report wit the purchase orders that no have any attachment?

Summary:

I want to know if is possible to create a report wit the purchase orders that no have any attachment.

Content (required):

I found that the documents of the purchase order are store in the table of FND_ATTACHED_DOCUMENTS but when I linked that table with PO_HEADERS_ALL by the PK1_VALUE and PO_HEADER_ID with the conditions of "FND_ATTACHED_DOCUMENTS"."ENTITY_NAME" = 'PO_HEADERS' I only see the purchase orders with documentation.

When I delete the condition, the report do not show any information.

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

22B