@Transactional
  @Override
  public CommandProcessingResult undoApplicationApproval(
      final Long savingsId, final JsonCommand command) {

    this.context.authenticatedUser();

    this.savingsAccountApplicationTransitionApiJsonValidator.validateForUndo(command.json());

    final SavingsAccount savingsAccount = this.savingAccountAssembler.assembleFrom(savingsId);
    checkClientOrGroupActive(savingsAccount);

    final Map<String, Object> changes = savingsAccount.undoApplicationApproval();
    if (!changes.isEmpty()) {
      this.savingAccountRepository.save(savingsAccount);

      final String noteText = command.stringValueOfParameterNamed("note");
      if (StringUtils.isNotBlank(noteText)) {
        final Note note = Note.savingNote(savingsAccount, noteText);
        changes.put("note", noteText);
        this.noteRepository.save(note);
      }
    }

    return new CommandProcessingResultBuilder() //
        .withCommandId(command.commandId()) //
        .withEntityId(savingsId) //
        .withOfficeId(savingsAccount.officeId()) //
        .withClientId(savingsAccount.clientId()) //
        .withGroupId(savingsAccount.groupId()) //
        .withSavingsId(savingsId) //
        .with(changes) //
        .build();
  }