SAP MDG (For Material) Data Replication not triggering IDOC

Hi,

I am facing an issue in SAP MDG Data Replication for Material Master.

All ALE/IDOC configuration done as per the SAP MDG Notes (Refer the link below).  Also DRF part is also done.

http://help.sap.com/erp_mdg_addon61/helpdata/en/5b/362c74ba324597ace35c6422370afe/content.htm?frameset=/en/77/29ad50e6542f3ce10000000a44538d/frameset.htm

The IDOC is getting posted from BD10 from MDG Hub system to ECC. So IDOC configuration is working fine.

When I am creating Change Request to create material in NWBC and all approval is done the IDOC is not automatically getting triggered in MDG Hub system.

I had configured all the DRFIMG settings and created a Business System and a Data Replication model as well. But still the IDOC is not getting triggered automatically.

Kindly anyone help me on this, What I am missing on this.

Thanks,

Vinish.