CRM BP No.Range

Hi CRM Guru's,

Please note that in my current project we have defined a new no. range for a newly created Sold-To-Party account group ZNSP in R/3.

Now while creating a prospect in CRM we have to manually select the no. range which should be the same as the no.range set in R/3 for ZNSP.

Is there any way to ensure that the no.range should be picked up by default i.e. if the no.range in R/3 is 10-10000 to 20000 THEN while creating a prospect in CRM the no.range assigned should be between 10000-20000 and not any other range.

Can someone please help me with this.