diff --git a/python-examples/bisq/bots/bisq_client.py b/python-examples/bisq/bots/bisq_client.py
index 91c1c64..b5120f5 100644
--- a/python-examples/bisq/bots/bisq_client.py
+++ b/python-examples/bisq/bots/bisq_client.py
@@ -396,5 +396,23 @@ class BisqClient(object):
                     currency_code,
                     payment_details)
 
+    def get_payment_account(self, payment_account_id):
+        try:
+            response = self.payment_accts_stub.GetPaymentAccounts.with_call(
+                bisq_messages.GetPaymentAccountsRequest(),
+                metadata=[('password', self.api_password)])
+            payment_accounts = list(response[0].payment_accounts)
+            if len(payment_accounts):
+                payment_accounts_filter = filter(lambda account: (account.id == payment_account_id), payment_accounts)
+                filtered_accounts = list(payment_accounts_filter)
+                if len(filtered_accounts):
+                    return filtered_accounts[0]
+                else:
+                    return None
+            else:
+                return None
+        except grpc.RpcError as rpc_error:
+            print('gRPC API Exception: %s', rpc_error)
+
     def __str__(self):
         return 'host=' + self.host + ' port=' + self.port + ' api_password=' + '*****'
diff --git a/python-examples/bisq/bots/sepa_mm_bot.py b/python-examples/bisq/bots/sepa_mm_bot.py
index 56c3176..c524f38 100644
--- a/python-examples/bisq/bots/sepa_mm_bot.py
+++ b/python-examples/bisq/bots/sepa_mm_bot.py
@@ -69,6 +69,14 @@ class SepaMMBot(BisqClient):
         self.close_channel()
         self.is_running = False
 
+    def is_valid_sepa_payment_account_id(self, sepa_payment_account_id):
+        account = self.get_payment_account(sepa_payment_account_id)
+        if account is None:
+            log.error('{0} is not a valid PaymentAccount.id.'.format(sepa_payment_account_id))
+            return False
+        else:
+            return True
+
     def make_market(self, reference_price_margin,
                     target_spread,
                     amount_in_satoshis,
diff --git a/python-examples/bisq/bots/sepa_mm_bot_ui.py b/python-examples/bisq/bots/sepa_mm_bot_ui.py
index cdf248a..8a4254f 100644
--- a/python-examples/bisq/bots/sepa_mm_bot_ui.py
+++ b/python-examples/bisq/bots/sepa_mm_bot_ui.py
@@ -70,6 +70,12 @@ def start():
 
 
 def start_bot():
+    payment_account_exists = bot.is_valid_sepa_payment_account_id(sepa_payment_account_id)
+    if payment_account_exists is False:
+        window.quit()
+        log.error('Shutting down UI.')
+        return
+
     disable_button(start_button)
     enable_button(stop_button)
     reference_price_margin = Decimal(price_margin_input.get())