SAP Message VC832 - Reference customer &2 already exists for company code &1

Diagnosis A reference customer has already been maintained for the company codeV1 determined. System Response The existing reference customer for the company code &V1& determinedcannot be overwritten or deleted. Procedure If you want to maintain the 'new' rather than the 'old' referencecustomer for the company code data, go to Ref.cst. -> Company code, andcarry out the changes there.