https://userapps.support.sap.com/sap/support/knowledge/en/3424391
3424391 - Purchase Requisition is not closed but not visible in report ME5A - SAP ERP & SAP S/4HANA...
You want to see a Purchase Requisition in report ME5A however it is not available, unless you set the "Closed Requisition" checkbox in the report selection....