Delete Distribution Rules For AUC

Hi,

I am wroking on one problem address to me. User haas created 999 distribution rule group for AUC settlement...and getting error message KD803.... Maximum distribution rule group reached.(T code AIAB).. we have implemented note 720619 and 483600 to delete unused distribution rule group.... but I am still not able to delete the same....as I found in programme (Z_SAP_SRULE_DEl_DISTR_GROUPS) it is not supporting assets rule group....

can you please suggest some other way how to delete Dist. rule group.....

Regards,