PO Header data still faulty message

Hi,

It is noticed for a particular document type whenever I try to de-release the PO via ME29n, it never gets cancelled. It shows up the error: PO header data still faulty:Message No.MEPO002.

I know this PO release strategy can be cancelled via ME28 but I would like to know where is the bug or issue which prevents this particular document type to cancel the release strategy by ME29n.

Please find the screenshot for reference.

Kindly advice.