PGI Quantity More than STPO Quantity

Hi,

We are regularly using Stock Transport Purchase Order for transferring stock from one plant to another plant with option ‘Stock Transport Purchase Order with SD’. This is required because the two plants (Supplying Plant & Receiving Plant) are physically at different locations.

We follow the process given below –

1. The ‘Stock Transport Purchase Order’ is created with reference to Purchase Requisition in transaction ME21N (Create Purchase
   Order – Vendor Known). The item category copied to the Purchase Order is U (Stock Transfer).
2. The delivery is created with reference to the Stock Transfer Purchase Order in transaction VL04.
3. The picking & ‘Post Goods Issue’ is done for the delivery in transaction VL02N.
4. Proforma Invoice is generated in transaction VF01 with reference to the delivery.
5. Excise Invoice is generated in transaction J1IIN, by clicking on button ‘From Billing’ & referring the proforma invoice generated in earlier step.
6. The material is sent to the receiving plant along with the Proforma Invoice / Excise invoice.
7. After receiving the material at the receiving plant, the Goods Receipt is posted in transaction MIGO by referring the Delivery. The excise invoice is also referred while posting the GR to capture & post the Excise Invoice.

While following this process, we found that the quantity in Delivery can be higher than the purchase order quantity.

We need to lock this. System should allow creating delivery (single delivery or multiple deliveries) against Stock Transport Purchase Order Item & doing Post Goods Issue for quantity not more than Purchase Order quantity.

Can anyone suggest solution to this?

Regards,

Prashant