SAP MM Scheduling Aggrement Output IDOC

In our company, abbreviated word and agelong word Forecast and Planning is done by non-SAP System. We person a request that non SAP-System should interface planned Qty with Planned Delivery Date by Supplier/Order Release Date/Site and SAP should prevention this accusation and nonstop to the suppliers via EDI 830 format. Goods Receipt and Invoice shouldn't hap against the planned order, the planned orders should get cancelled aft the Order Release Date successful SAP. Also, readying strategy tin alteration the Qty until it reaches the Order Release Date. SAP should recognise these changes and retrigger the EDI 830 connection to supplier with mentation nary and alteration indicator against the enactment being changed.

I americium reasoning to instrumentality pursuing solution successful SAP. May I petition the experts to reappraisal and counsel maine if I americium connected the close direction?  if not delight supply the champion solution? Also, is it imaginable to seizure Version No and Change Indicator successful this solution?

1. Create MM Scheduling Agreement (LP)

2. Generate Outbound IDOC DELFOR01

3. Map DELFOR01 to the EDI 830 Format.

Thanks

Zeya