Check 

After the delta transfer has been initialized, you must check the load results in the monitor.

After the delta upload and activation of the master data, you must check the time slice in master data maintenance. 

Once a contract has been billed, the extrapolation key figure values should decrease over the billed period by the same amount that the billing key figure values increase. 

The billing key figure values of a reversed billing documents are transferred to BW with a minus sign.

In the case of several billings for one contract per month, check the Number of Billed Days and the Number of Extrapolated Days are maintained correctly. 

After the move-out date and once the contract data has been re-uploaded, the terminated contract in BW cannot have key figure values other than 0 over the following months.

The selection in the segment builder using a BW query must produce the same target group as the alternative selection in BW. Once the target group has been opened, this result can be checked against the result in the detail area of the segment builder by using the BEx Analyzer.