WalletAccountEntity senderAccount = entityManager.find(WalletAccountEntity.class, sender.getAssetCode());
Long senderWalletId = senderAccount.getDealerWallet().getWalletId();

WalletAccountEntity receiverAccount = entityManager.find(WalletAccountEntity.class, receiver.getTargetCode());
Long receiverWalletId = receiverAccount.getDealerWallet().getWalletId();

if (senderWalletId != null && receiverWalletId != null && !senderWalletId.equals(receiverWalletId)) {
    LOGGER.error("Different users");
    throw new CreateOperationException(baseOperation.getUID1(), 2169L);
}