Hi Tim,
Try this and getting link for document number:
SELECT T0.[DocNum], T0.[CardName], T0.[CardCode], T0.[DocDate], T0.[NumAtCard],
T0.[DocStatus]
FROM ODPI T0 INNER JOIN OCRD T1 ON T0.CardCode = T1.CardCode
WHERE T0.[CardCode] = $[OCRD.cardcode] and T0.docstatus = 'O'
for browse
Thanks & Regards,
Nagarajan