Update Sales order line details using OE_ORDER_PUB.PROCESS_ORDER API

In the below shown example I am updating the request_date to sysdate, also I am considering only the first line of the sales Order.

Logic can be modified accordingly for updating any number of lines in the sales Order

v_header_rec                   oe_order_pub.header_rec_type;
v_line_tbl                     oe_order_pub.line_tbl_type;

BEGIN
-- Line Record --
v_line_tbl(1)                           := OE_ORDER_PUB.G_MISS_LINE_REC;--oe_order_pub.G_MISS_LINE_TBL;
v_line_tbl(1).last_update_date       := sysdate;
v_line_tbl(1).last_updated_by        := FND_GLOBAL.USER_ID;
v_line_tbl(1).last_update_login      := FND_GLOBAL.LOGIN_ID;
v_line_tbl(1).header_id              := l_header_id; --fetch the value
v_line_tbl(1).line_id                := l_line_id; --fetch the value
v_line_tbl(1).operation              := oe_globals.G_OPR_UPDATE;
v_line_tbl(1).change_reason          := 'MANUAL';
v_line_tbl(1).request_date           := sysdate;


OE_ORDER_PUB.PROCESS_ORDER (
p_api_version_number            => v_api_version_number
, p_header_rec                  => v_header_rec
, p_line_tbl                    => v_line_tbl
-- OUT variables
, x_header_rec                  => v_header_rec_out
, x_header_val_rec              => v_header_val_rec_out
, x_header_adj_tbl              => v_header_adj_tbl_out
, x_header_adj_val_tbl          => v_header_adj_val_tbl_out
, x_header_price_att_tbl        => v_header_price_att_tbl_out
, x_header_adj_att_tbl          => v_header_adj_att_tbl_out
, x_header_adj_assoc_tbl        => v_header_adj_assoc_tbl_out
, x_header_scredit_tbl          => v_header_scredit_tbl_out
, x_header_scredit_val_tbl      => v_header_scredit_val_tbl_out
, x_line_tbl                    => v_line_tbl_out
, x_line_val_tbl                => v_line_val_tbl_out
, x_line_adj_tbl                => v_line_adj_tbl_out
, x_line_adj_val_tbl            => v_line_adj_val_tbl_out
, x_line_price_att_tbl          => v_line_price_att_tbl_out
, x_line_adj_att_tbl            => v_line_adj_att_tbl_out
, x_line_adj_assoc_tbl          => v_line_adj_assoc_tbl_out
, x_line_scredit_tbl            => v_line_scredit_tbl_out
, x_line_scredit_val_tbl        => v_line_scredit_val_tbl_out
, x_lot_serial_tbl              => v_lot_serial_tbl_out
, x_lot_serial_val_tbl          => v_lot_serial_val_tbl_out
, x_action_request_tbl          => v_action_request_tbl_out
, x_return_status               => v_return_status
, x_msg_count                   => v_msg_count
, x_msg_data                    => v_msg_data
);

END;