DKB does not accept connections anymore

[Jan-2k]

Hi!

I recently recognized that my previous working application suddenly throws an error while fetching transactions from my DKB account. I used the example code from https://python-fints.readthedocs.io/en/latest/trouble.html to verify if the error I receive is a result of incorrect session handling inside my application or if there are general problems with DKB sessions. If I use the example code I'm getting the following output:

We need the name of the TAN medium, let's fetch them from the bank
Dialog response: 9050 - Die Nachricht enthält Fehler.
Dialog response: 9800 - Dialog abgebrochen
Dialog response: 9010 - Die angegebene Bankreferenz/Dialog-ID ist nicht gültig.
Traceback (most recent call last):
  File "test.py", line 42, in <module>
    minimal_interactive_cli_bootstrap(f)
  File "/home/***/.local/lib/python3.7/site-packages/fints/utils.py", line 322, in minimal_interactive_cli_bootstrap
    m = client.get_tan_media()
  File "/home/***/.local/lib/python3.7/site-packages/fints/client.py", line 1360, in get_tan_media
    response = dialog.send(seg)
  File "/home/***/.local/lib/python3.7/site-packages/fints/dialog.py", line 156, in send
    self.client.process_response_message(self, response, internal_send=internal_send)
  File "/home/***/.local/lib/python3.7/site-packages/fints/client.py", line 230, in process_response_message
    self._process_response(dialog, None, response)
  File "/home/***/.local/lib/python3.7/site-packages/fints/client.py", line 1284, in _process_response
    raise FinTSClientError("Error during dialog initialization, could not fetch BPD. Please check that you "
fints.exceptions.FinTSClientError: Error during dialog initialization, could not fetch BPD. Please check that you passed the correct bank identifier to the HBCI URL of the correct bank.

I also found out, that the dialog-id sometimes is 0 during the communication:

We need the name of the TAN medium, let's fetch them from the bank
DEBUG:fints.connection:Sending >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
        fints.message.FinTSCustomerMessage([
            fints.segments.message.HNHBK3( # Nachrichtenkopf
                header = fints.formals.SegmentHeader('HNHBK', 1, 3), # Segmentkopf
                message_size = 494, # Größe der Nachricht (nach Verschlüsselung und Komprimierung)
                hbci_version = 300, # HBCI-Version
                dialog_id = '0', # Dialog-ID
                message_number = 1, # Nachrichtennummer
            ),

Does anyone else happen to experience the same error or has information about how to fix this?

Bye
Jan

[oregano87]

Hi
Have the same issue.

WARNING:fints.client:You should register your program with the ZKA and pass your own product_id as a parameter.
We need the name of the TAN medium, let's fetch them from the bank
ERROR:fints.client:Dialog response: 9050 - Die Nachricht enthält Fehler.
ERROR:fints.client:Dialog response: 9800 - Dialog abgebrochen
ERROR:fints.client:Dialog response: 9010 - Die angegebene Bankreferenz/Dialog-ID ist nicht gültig.

[DevDavido]

Having the same issue with DKB:

Dialog response: 9050 - Die Nachricht enthält Fehler.
Dialog response: 9800 - Dialog abgebrochen
Dialog response: 9010 - Die angegebene Bankreferenz/Dialog-ID ist nicht gültig.
! fints client exception for DKB (blz 12030000) user XXX: Error during dialog initialization, could not fetch BPD. Please check that you passed the correct bank identifier to the HBCI URL of the correct bank.

BLZ: 12030000
URL: https://banking-dkb.s-fints-pt-dkb.de/fints30

Tried all settings from OpenHBCI but no success.

[MEschenbacher]

I'm connecting to DKB for a few months now, without problems. Is this resolved?

[s3ntin3l8]

I have been using it before successfully (p until 2 months ago) but now I'm receiving the same error. So it is not resolved.

[MEschenbacher]

What's the end date of the time span for which you are showing transactions? For DKB, I need to set end_date=datetime.date.today()

[ngoettin]

This problem still persists. The documentation on the response code 9010 which is received is not too helpful either:

[bst2k]

Any News about this error? Got the same problem..

[ngoettin]

Unfortunately not. I'm also not quite sure on how to tackle this problem

[frederictobiasc]

Hi,
I tested the DKB using the test script, everything (despite get holdings) works.
The TAN methods response contains the following items:

fints.segments.dialog.HIRMS2( # Rückmeldungen zu Segmenten
	                    header = fints.formals.SegmentHeader('HIRMS', 4, 2, 4), # Segmentkopf
	                    responses = [ # Rückmeldung
	                                fints.formals.Response( # Rückmeldung
	                                    code = '3050',
	                                    reference_element = None,
	                                    text = 'UPD nicht mehr aktuell, aktuelle Version enthalten.',
	                                ),
	                                fints.formals.Response( # Rückmeldung
	                                    code = '3920',
	                                    reference_element = None,
	                                    text = 'Zugelassene Zwei-Schritt-Verfahren für den Benutzer.',
	                                    parameters = [
	                                            '921',
	                                        ],
	                                ),
	                                fints.formals.Response( # Rückmeldung
	                                    code = '0020',
	                                    reference_element = None,
	                                    text = 'Der Auftrag wurde ausgeführt.',
	                                ),
	                        ],
	                ),

DKB offers quite some TAN options. Have you tried playing with them? I've only activated Push-TAN and it works.

[bst2k]

@frederictobiasc do you have an example Code for using the TAN to log in? In the Troubleshot Test Code i only got the same error as before.

I also tried the following Code from the Website

with f:
    # Since PSD2, a TAN might be needed for dialog initialization. Let's check if there is one required
    if f.init_tan_response:
        print("A TAN is required", f.init_tan_response.challenge)
        tan = input('Please enter TAN:')
        f.send_tan(f.init_tan_response, tan)

    # Fetch accounts
    accounts = f.get_sepa_accounts()

with the error result

fints.exceptions.FinTSClientError: Error during dialog initialization, could not fetch BPD. Please check that you passed the correct bank identifier to the HBCI URL of the correct bank.

In general, using https://banking-dkb.s-fints-pt-dkb.de/fints30 for BLZ 12030000 is still correct? Asking cause in the long response i also saw this:

ERROR:fints.client:Dialog response: 9050 - Die Nachricht enthält Fehler.
ERROR:fints.client:Dialog response: 9800 - Dialog abgebrochen
ERROR:fints.client:Dialog response: 9010 - Die angegebene Bankreferenz/Dialog-ID ist nicht gültig.

[frederictobiasc]

Hi @bst2k,

I only used the test script I linked above, so I cannot provide any other code.

If I were you, I would carefully check for typos. Here are my client_args (redacted).

logging.basicConfig(level=logging.DEBUG)
client_args = (
    '12030000',  # BLZ
    'username',  # USER
    'password',
    'https://banking-dkb.s-fints-pt-dkb.de/fints30'  # ENDPOINT
)

If this doesn't work, I would start and contact DKB if I were you, because then there must obviously something wrong. I had a conversation with a technical support representative of DKB myself and he stated that they happily assist in case of problems.
Maybe you want to ask them for a development account of their FinTS implementation?

I hope that helps!
BTW: I fixed the link above to the test script.

[bst2k]

There can't be any typos due i copy login and password from KeePass and the online login works. Also the Bank Data must be correct, I found the confirmation in the FAQ:

Falls du die Schnittstelle zu unserem Banking im Programm manuell einrichten musst, nutze diese Parameter:

Bankleitzahl: 120 300 00
Sicherheitsmedium: HBCI-PIN mit chipTAN/TAN2go
Benutzerkennung: Dein Anmeldename
Kunden-ID: Dieses Feld bitte frei lassen
HBCI-Version: FinTS 3.0
Kommunikationsadresse: https://banking-dkb.s-fints-pt-dkb.de/fints30

So it reads like there is no adjustments for the account needed. To be sure I wrote an message to the DKB Support.

When i log into my online banking I get an push from my "DKB-Banking" app where i need to confirm the log in, probably the connection is blocked cause I got no push message to confirm. Did somebody know an workaround for this?

[frederictobiasc]

I also don't get a Pushtan for login. This is only necessary when doing things like requesting data.
Would you mind telling what TAN options are enabled in your DKB account?
If you want to, you can also share your (anonymized) log for me to compare. Maybe this leads to some insights.

[bst2k]

Thanks for your help @frederictobiasc

My only activated TAN is TAN2go.

If I run this Code:

import logging
from fints.client import FinTS3PinTanClient

logging.basicConfig(
    level=logging.DEBUG,
    filename="log.log",
    filemode="w"
)

f = FinTS3PinTanClient(
    '12030000',
    'LOGIN',
    'PASSWORD',
    'https://banking-dkb.s-fints-pt-dkb.de/fints30'
)


with f:
    info = f.get_information()
    print(info)

I get an successfully result from DKB.

{'bank': {'name': 'Deutsche Kreditbank Aktiengesellschaft', 'supported_operations': .....

If I change the get_information to get_sepa_accounts I got the same error like in the other Threads:

DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): banking-dkb.s-fints-pt-dkb.de:443
DEBUG:urllib3.connectionpool:https://banking-dkb.s-fints-pt-dkb.de:443 "POST /fints30 HTTP/1.1" 200 882
DEBUG:fints.connection:Received <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

...

	                fints.segments.dialog.HIRMG2( # Rückmeldungen zur Gesamtnachricht
	                    header = fints.formals.SegmentHeader('HIRMG', 3, 2), # Segmentkopf
	                    responses = [ # Rückmeldung
	                                fints.formals.Response( # Rückmeldung
	                                    code = '9050',
	                                    reference_element = None,
	                                    text = 'Die Nachricht enthält Fehler.',
	                                ),
	                                fints.formals.Response( # Rückmeldung
	                                    code = '3905',
	                                    reference_element = None,
	                                    text = 'Es wurde keine Challenge erzeugt.',
	                                ),
	                                fints.formals.Response( # Rückmeldung
	                                    code = '9800',
	                                    reference_element = None,
	                                    text = 'Dialog abgebrochen',
	                                ),
	                        ],
	                ),
	                fints.segments.dialog.HIRMS2( # Rückmeldungen zu Segmenten
	                    header = fints.formals.SegmentHeader('HIRMS', 4, 2, 4), # Segmentkopf
	                    responses = [ # Rückmeldung
	                                fints.formals.Response( # Rückmeldung
	                                    code = '3920',
	                                    reference_element = None,
	                                    text = 'Zugelassene Zwei-Schritt-Verfahren für den Benutzer.',
	                                    parameters = [
	                                            '921',
	                                        ],
	                                ),
	                                fints.formals.Response( # Rückmeldung
	                                    code = '9955',
	                                    reference_element = None,
	                                    text = 'Auftrag nicht ausgeführt - Die Gerätebezeichnung ist unbekannt. (MBV07390100255)',
	                                ),
	                        ],
	                ),

...

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

Same error occurs when running the "Troubleshooting" Code.

[frederictobiasc]

If I change the get_information to get_sepa_accounts I got the same error like in the other Threads:

I just tested it, and it works wonderfully for me. IMO, this justifies opening a ticket at DKB FinTS support. I'm curious to hear what they tell.