How to allow only new combinations when adding lines in manual planning?

Question

Hello Xperts.
in manual planning (input ready query called over web-template) the user wishes to plan (change the key figure values) for already existing combinations and to add new lines (which has been enabled in the web-template through a button group).
The crux of the matter is that the user is supposed to be able to enter only new unique combinations of data. Hence the user may not enter already existing characteristic combinations as a new line.
I have noticed that the system default is that if the user enters an already existing combination when "adding a new line", the value entered for the key figures is simply added to the existing value (summation) of that characteristic combination. This is unacceptable to the business requirements!
I thought about solving with a check combination exit (CL_RSPLS_CR_EXIT_BASE), but the problem is that all already existing combinations would be invalid, hence it would not work I think.
I would appreciate any suggestions out there how this could be accomplished. Thank you.

Answer 1

Hi,
  The best option that satisfies your requirement is to create a custom planning function to accept only new combinations.
For this check the following link,
http://help.sap.com/saphelp_nw70/helpdata/en/43/0c033316cd2bc4e10000000a114cbd/frameset.htm
In the above go to BI Integrated Planning -> BI Integrated Planning -> Implementing Planning Function Types
After this, in your "Save" button on the workbook insert this custom function also before the "Save".
So once you click "Save" button first check is performed and error is thrown if the records entered by the user are not as per your requirement.
Regards,
Balajee