Hi Amol
thanks for the reply
The ZSKU is already in selection however this is the target characteristics. There are differences in target and source characteristic for i.e characteristics length as well as no of navigational attributes. Source and destination have different number of navigational attributes.
I did try for one sku and getting the same error, if i change the grouping from sku to location 9amatnr i dont get any error. There is no specific logic in BADI and no i am not releasing forecast to SNP. These are both SNP Planning area copying fcst data for reporting purpose.