Business system error while activating in ID

Hi,

I get an error " Logical system ERPCLNT001 already exists in service | ERPCLNT001

SAP system ID ERP and client 001 already exist in service | ERPCLNT001"

Technical system of type ABAP is created where i have selected my Product and SCV. I created a new business system (ABAP) and selected the techincal system. upon importing and activating in ID i get the above message. can you pls guide me to fix this issue?

thkx

chaks