In Part I, I have explained how to test  CDI API  in S/4 Hana Cloud whose target is data integration . In part II, I will explain how  to realize  initial data extraction and delta data extraction with background job in CPI with Iflow .

For initial data extraction, the data volumn is big especially for business objects like sales order ,purchase order etc . If the skipToken shown up in returned body nextLink field,that means the iflow need to continue reading data base on delta token and skipToken .  Otherwise the  iflow can stop reading data from S/4 Hana Cloud .

The following are the main screen shot for init data extraction iflow:

The following is the screen shot after the inflow run. This initial data extraction only run once for a subscription, but it will run untill there is no further data in initial data extraction base on skipToken .

For delta data extraction, the iflow need to read subscription first to get CurrentDeltaLink,  then do the delta data extraction by using CurrentDeltaLink . The following are screen shots for the delta data extraction iflow , it triggered by timer after deployment.

After this iflow deployed , it will do the delta  data extraction from S/4 Hana Cloud  with background job defined in Timer .