Stock transfer from SAP to External system

Hi,

My client uses POIT transaction to transfer the stock level from SAP to external system every 1 hour. This will create an Idoc with stock details for all storage locations and transfer to external system. But this transaction does not allow the delta stock transfer (Change in stock). Say that I have an material: XYZ and the current stock for that material is 10 PC and I transfer this using POIT and the stock remains 10 for another 1 hour. If I run it again it should not transfer this material since there is no

change in stock. There is no change pointer exist for this.

Do we have a solution for this in standard SAP??

Thanks

Purushotham..