BAPI For Shipment Change/Update

Hi,

I need a BAPI to update/change Shipment.

I am aware of BAPI_SHIPMENT_CHANGE..but it is not released officially from SAP.

This is a online job to change the shipment. I need a BAPI rather than a FM. Let me know some generic BAPI's which will change the shipment for a Purchase Order as of VT02N Transaction.

Thanks & Regards,

Priyanka.