Make sure that accounts and their opening balance values are the same currency.

app/Models/Account.php

@@ -211,6 +211,26 @@ class Account extends Model
         return $value;
     }
 
+    /**
+     * Returns the opening balance
+     *
+     * @return TransactionJournal
+     * @throws FireflyException
+     */
+    public function getOpeningBalance(): TransactionJournal
+    {
+        $journal = TransactionJournal::sortCorrectly()
+                                     ->leftJoin('transactions', 'transactions.transaction_journal_id', '=', 'transaction_journals.id')
+                                     ->where('transactions.account_id', $this->id)
+                                     ->transactionTypes([TransactionType::OPENING_BALANCE])
+                                     ->first(['transaction_journals.*']);
+        if (is_null($journal)) {
+            return new TransactionJournal;
+        }
+
+        return $journal;
+    }
+
     /**
      * Returns the amount of the opening balance for this account.
      *