Quotation success rate

Hi all,

I need to calculate the number of quotations result in order.The key figure 0ORD_QUOT(Number of orders resulting from quotations) in the cube 0SD_C05 is exactly what I want.But the datasource including this key figure is 2LIS_01_S260 and it is not supported by SAP. And the alternative datasource suggested by help.sap is 2LIS_11_VASCL,2LIS_11_VAHDR and 2LIS_11_VAITM.See the link please:

http://help.sap.com/saphelp_bw/helpdata/en/85/18f23864eec97ae10000000a114084/frameset.htm

Could you tell me how I can find the number of orders resulting from quotations by those datasources ,I could not find any related field about my requierement.Or is there any standard solution for this problem?

Thanks