Regarding ZWECK export parameter in FM "RV_DELIVERY_PICK_VIEW"

[former_member624837]

Hi,

We have created one Delivery for plant "D123", this plant is warehouse managed and also picking of the material we are doing by creating Transfer Order(which is mandatory for this warehouse managed plant).

So, when i create delivery, since picking is done through Transfer order, picking quantity filed inside PICKING tab is grade out.

Now, when i am saving Delivery(without creating TO). there is one existing Output type is getting trigger. In its driver program, FM "RV_DELIVERY_PICK_VIEW" is used to get the picking tab detail.

Currently, we are passing value "D" in ZWECK field. But for above created delivery, after FM is executed, we are not getting any value in VBLKP_TAB table(even though picking of delivery is not yet happen).

However, when i pass "A" in ZWECK field, i am getting value in VBLKP_TAB internal table.

Can someone please let me know what are the different value we can pass in ZWECK parameter?
Why i am not getting value in VBLKP_TAB table, when i am passing "D" in ZWECK parameter. But, when i am passing "A", how system populate value in VBLKP_TAB table.

Thanks a lot in advance.