Fiori Approve Reqs - Custom Sales Order Approval Issue

Hi All,

Urgent Help required .

We are developing Sales Order Approval apps using Approve Requests as baseline.   We have requirement to  display the sales Order details in Apps Like the PO apps.  Please help me find out how to add business data to Approve request apps . I have checked below Doc .

.http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/f0ab2463-4e16-3110-b08e-d93918e513a1?QuickLink=index&overridelayout=true&58789512365087

Step 8 Extensibility section .

8.2 we have implemented . all the steps mentioned in Doc were implemented in the backend system as we have to retrieve data from ECC/ERP

Created Model Provider Class.

Created the data provider Class.

Created Service and maintained the customization table /IWPGW/C_TGW_CTX with Service.

But i am not able to see the fields i have added to Entity when testing in the metadata fields in TASKPROCESSING. However, it does show there is Contextserviceurl with the context service what we have created

Please let me know the Next step or if i am missing some steps .

Please suggest me best approach to develop the Approval apps if not delivered by SAP ???

Thank you very much for your help.

Thanks,

Deepanker