SAP Message /IBS/RB551 - Reclassification not possible, contract &1 is in a IVA

Diagnosis
A reclassification is not possible because the contract is alreadyassigned to individual value adjustment.

System Response
The processing is terminated.

Procedure
Contracts cannot be reclassified from individual value adjustment.
Check whether the account can be deactivated. To do so, use theDeactivate Account function in the RBD online processing screen.