The validation error files can be extracted from the TrustTrack platform in case they were not deleted from the Tachograph files download module (front-end).

You will need to open the TrustTrack Web-User of the needed client, then go to the Tachograph files download module.
In the tachograph files download module, when searching for the needed file, better to filter out the needed object, so the validation error file would be present in the list. Then press F12 to open the console:

Go to the Network tab and refresh the page by pressing F5. In the column „Name“ you will see items named „list“. You will need to find a list that contains ID requests. Most likely it would be 3rd list. Click on the list and then in the “Preview” expand the item list by clicking on the triangle:

You will see all requests that are listed on front-end with their specific ID of the request that is needed for downloading the .ddd file:

For example, we will pick an object under the name 202D5006, from this list. According to what we see in the Tachograph files download module, the request for the file is 5th. But in the network list, we started counting from 0, so our request will be 4th in the list. In addition, we could compare dates and request names (additionally object names) to ensure that we‘ve chosen the needed one:

Now we only need to get the “ID” of the request, which is written in the first line:

Copy the download ID and save it:

09d55509-95f5-4025-8e56-7bdf10679638

Future steps will require the use of Postman. VPN should be turned on. It is MANDATORY!

In postman we will need to insert this specific link with “GET” function:

http://lb-raw-coord-vip.prod.bnk.ruptela.lt:11300/download/{IMEI}/tachograph/{ID}.ddd

As you see, we need to have {IMEI} of the object and {ID} of the request.

For our example the link would look like this:

http://lb-raw-coord-vip.prod.bnk.ruptela.lt:11300/download/868963047924709/tachograph/09d55509-95f5-4025-8e56-7bdf10679638.ddd

Insert the link that you created in Postman, ensure that you are using „GET“ and press „Send“:

After clicking Send – in Body, you will see the response. Now you need to save the response by clicking on „Save response“ -> „Save to a file“:

And save the file by naming it and adding the extension of the file as .ddd. Don‘t forget to save it to the needed path:

That is all, now, the Validation error file can be used for future investigation. See articles below: