Multiple Documents with Header and Footer

Dear All

I have a requirement to do page Break at Header Level Internal Table.

For Example

I have 2 Internal Tables PO_HEAD_TAB and PO_ITEM_TAB.

PO_HEAD_TAB is having multiple POs Header data while PO_ITEM_TAB is having line items of each PO.

I want to display PO Header on Master page and use PO number for page break.

Conidtional page break is not working.