Query to find AP invoice workflow item key in oracle apps

1SELECT ITEM_TYPE,
2         ITEM_KEY,
3         invoice_num,
4         BEGIN_DATE,
5         Q.END_DATE,
6         ROOT_ACTIVITY
7    FROM apps.WF_ITEMS Q, apps.AP_INVOICES_ALL
8   WHERE     Q.ITEM_TYPE = 'APINVAPR'
9         --AND Q.END_DATE IS NULL
10         AND REGEXP_SUBSTR (Q.ITEM_KEY,'[^-]+',1,1) = TO_CHAR (INVOICE_ID)
11         AND invoice_num IN ('123123')
12ORDER BY 3, 2;