Customer Party Merge Completes with error

Hi,

Error: Merge failed in Receivables (HZ_PARTY_RELATIONSHIPS ) with the following error message The following parties cannot be merged because they belong to separate hierarchies. Please remove the hierarchy relationship for one or more of the parties or have your administrator allow parties to participate in multiple hierarchies.

We had similar issue before, we tried to login with Customer Data Librarian responsibility, Customer> View Hierarchies > Remove the party and rerun the merge and issue was resolved.

But now we are`nt able to View Hierarchies for the Customer, coz the radio button is freezed.

Thanks,

Santhosh Krishna