Update mode R is not supported -sdn Wiki

Reason : This problem occurs when we tried to request repeat delta for master data extractors, For Master data datasources delta updated based on ALE Change pointers. So Repeat can't be done if any delta load ended with error.
Solution : A . After a delta request is failed, we should not request the repeat delta. We can reinitilize the datasource and load entire data. other solution can be
                   B. We can make the QM status to Green of the failed delta request, if the request was successfully processed in R3 and finished with the information 'data selection ended'. It is always better to reinitialize the request.
Background : Apart from the solution, we must know the concepts and properties of delta in case of master data.
Most of the Infoobjects carrying master data are already delta capable, a pre requisite to a datasource(master) can be changed to delta capable datasource is described below.
The Transaction to create/change master data should be linked to the Change document update, this feature already implemented for the most of the master tables like KNA1 and MARA in R3 System. So if any record changes the delta is captured based on the key of Master data table and get filled into extract structure. So whenever a field changes in a record which is part of extract structure, it must be updated in the delta table.
To make the above setting the follow steps must be executed.
1. Check whether ALE Change pointer are active in source system. T Code BD61. 




2. Check the number range is maintained in the transaction BDCP. The number range should be  000000001 to Number 999999999


3. Check in ALE Customizing, whether all required ALE messages are checked or not.
Transaction - SALE - > Modeling and Implementing Business process -> Mater data distribution -> Replication of modified data -> Activate Change pointers for message types, here check all the required message types.
4.Check, whether the number range for the message type BI_MSTYPE is maintained : Transaction SNUM -> Entry 'BI_MSTYPE' -> Number range -> Intervals. The entry for 'No.' must be exactly '01'. In addition, the interval must start with 0000000001, and the upper limit must be set to 0000009999
All these setting must be done before getting started with Master data delta extraction.