Frequently Asked Questions

How do I start?

Simply register to access the step-by-step guide for integration between your software and our platform and see the dashboard with administration module and invoice flow control. Pro tip: Invite your teammates and developers responsible for integration!

What are required steps to enable compliant invoicing for my software?

1. Successfully test and complete integration of your software with DDD Invoices platform (developers required). 2. Add any legal entities, for whom you are making your software compliant. 3. Fill in your company data and the data of other legal entities (certificates etc.). 4. Switch to production!

What will I get with connecting to your platform?

Your software will get the ability of compliant invoicing either for your own invoicing or for the users of your software. We can help you with providing the whole invoicing infrastructure for generating tax compliant PDFs, fiscalized (QR codes) invoices and e-invoices, delivery to tax authority portals & clients via e-mail, receiving from tax authority portals, secure web-server and OCR-ing received non-e-Invoices and legal archiving of your invoices in a government approved legal storages. Additionally, we offer the possibility of EU trusted time-stamping and digital signatures.

What countries do you support?

Please reach out with your requirements about the desired country and use case. Please state the country, type of invoice (B2B, B2C, B2G), cross-border and if it is issued, received invoices or fiscalization only need.

Which e-invoicing networks are you connected to?

We are connected to a PEPPOL network and are a certified PEPPOL access point.

Can the software handle increased invoice volumes as our business grows?

Our platform is indefinitely expandable, which we can adjust accordingly to make sure the bandwidth is sufficient.

Do you provide training for our staff to effectively use your software?

Usually, there is no need for training of your staff. Once the tech team created and tested the integration, your team member (Trustee) uses the Dashboard for overseeing purposes. Developers have access to the integration learning playground inside the dashboard so they can perform all the neccesarry actions. We provide support during the whole integration procedure and afterwards, in case of any questions.

Do you provide a management module/dashboard?

Yes. After the sign-up you will get access to the dashboard with a comprehensive administration module, invoice-flow control module and integration module. In the administration module, you handle all actions regarding the company's data and certificates, in invoice-flow control module you have the overview of successful invoices and invoices with errors, that you can filter and download for later reporting and in integration module the tech team get all the information regarding integration.

Where can I learn more about e-invoicing, fiscalization & invoicing requirements to make my software compliant?

In general, you only need to integrate with our platform and send invoice data. We will take care about the rest. Ofcourse, you need to know your requirements and use case. We aim to assist you with that as much as possible with our comprehensive blogs & API playground.

What type of invoices can I do with your service?

You can do e-invoice, fiscalizated invoice (with a QR code) or just normal .PDFs. Their usage, usually depends of the country's invoicing requirements and company needs.

How does the visualization of the invoice/PDF look like?

The template is visible after the registration in the Integration section of the Dashboard.

Can I customize your visualization?

You can customize our template with your or your clients logos, signatures & stamp.

Do you offer custom templates/visualizations of invoices?

We can create a custom visualization of the invoice specifically for your needs as a custom work.

Can I add a attachments to the invoice data/object I am sending to your service?

Ofcourse. You can add your .PDF visualizations, contracts or other attachments.

In which languages do you support PDF creation? Which currencies do you support?

We offer PDF creation in English, German, Spanish, Polish, French, Slovenian, Croatian, Serbian, Montenegrin, Italian, Romanian, Dutch, Bosnian, Estonian, Slovakian, Czech and adding new daily. We offer almost every currency available.

How does integration work?

Developers prepare a .JSON object with a small and simple set of invoice data and send it to our platform via the REST API. This essential integration can be learned and implemented in one working day. From this data, we generate tax compliant invoice. Then, based on your requirements, we send the invoice to potential clients, tax authorities or simply return you compliant invoice in the API reponse.

Developers can help themself with API documentation outside & much more comprehensive API playground on the Dashboard.

How long does the integration last?

The integration with our platform is probably the most simple on the market. Basic integration can be done in just a couple of hours.

More advanced invoices requirements (storno invoices, proforma invoices, mass API etc.) can be finished in 3-5 additional days.

How many integrations do you need to cover multiple countries?

There is a single API for the global compliance. You only need to integrate once, to cover multiple countries and easier expansion.

Do you have a test environment? Are you connected to the test environment of tax authority portals?

You only have one account. Tech team is integrating & testing the integration with the Integration API key, used only for integration between your software and our platform.

When you want to start sending actual invoices from your software to our service, you use a separate Connection Key that is unique to each organization, to send your invoice data to our service. Sending invoices with the Connection Key to our service is initially in TEST mode (your invoices are sent to TEST environment of Tax Authority portals.). When you are ready to go-live, you switch your invoicing to the PROD environment and start sending invoices to the production environment of the tax authority portals.

During the implementation phase, how do you manage testing, encompassing data validation, performance testing, and user acceptance testing?

You are testing only the integration between your software and our platorm. When this integration is confirmed, you job regarding the integration is mostly done.

After the integration, you are primarily in the TEST mode. In this TEST mode, you test the 5 possible distribution channels (tax authority portal, PEPPOL, intra-DDD Invoices platform delivery, other e-invoicing networks & e-mail) based on your requirements. Those invoices are send to the TEST environments of those channels. (For eMail, you test whichever mail you like). In the API response, you will get a proof feedback data that the invoices has been in the TEST environment.
Important: Our platform has established the connection with TEST environments of each of the distributions channels in covered countries. You do not have to deal with any of your own TEST environments.

After you select a business package & switch to PRODUCTION mode, your invoices will start going to the PRODUCTION environment of the distribution channels.

All data validation happens in the TEST mode, and is exactly the same as in PRODUCTION mode. The only thing that changes are the sending credentials, so that invoices are send to the PRODUCTION environment.

What data validation do you do?

Because we accept simple .JSON object into our platform, you are responsible only for the data that you send to our platform. From that data we create compliant e-invoices or other invoice formats from it, we are always sure & responsible that generated invoices will be in correct format. All data validation required is done previously on our side, when covering the country.

All invoice calculations, rounding errors, delivery to tax authority etc. is tested by us.

I am an independent software vendor (ISV) that needs to provide compliant invoicing for my customers. How can I onboard them?

You can add them manually or use a simple "Add customer" API. Each of your customers get's a specific connection key, so we know who is generating invoices.

Can your software integrate with our existing financial and accounting systems?

The integration can be done with every software that can send an HTTP post/get request. If your software cannot do that, we will open a custom project for you and find additional possibilities.

How do you manage certificates/API keys required for authentication with the tax authority?

You upload your and your customers certificates/API keys inside the administration module or via the API.

Can you business handle large volumes? How much request can you handle per second? Do you allow mass load tests?

In the standard business packages, the requests are limited up:

- document (invoice, e-invoices) up to 1 per second / 1000 per hour - from one location
- fiscalization / dig. report up to 3 per second / 3000 per hour - from one location

If you have a use case to send all invoices in one request (e.g. Periodic mass billing) - you have to use a Mass. API for this purpose, available in the standard packages.

If you'd require higher frequency due to bursts of high volumes (e.g. events, holidays, etc.) that the ones above, please contact us to open the bandwidth.

Do you offer manual invoice upload, until the API integration is not finished yet?

We offer a manual invoice creation solution from our platform, if that would be required in the case of faster market launches, testing, temporary solutions etc.

For integrations, that would require a lot of effort on your side (complex changes in legacy softwares, internal organizational processes etc.) we offer a solution "Virtual Printer", that allows "printing" invoices into our platform from your software.

How does your software ensure compliance with various tax authority regulations?

We monitor & maintain the tax authority requirements in-house, with people dedicated for that role. All changes in tax authority requirements are done by us, so your integration with our platform does not change. In the event of the breaking change, you would be notified at least one month in advance.

Are you committed to keeping the software updated as regulations change?

Yes, all the care for the constant provision of legal compliance is on our side.

Can you provide details on how you adapt your system to changes in regulation?

Since we moved all the knowledge regarding technical e-invoicing schemas, legislation changes about e-invoicing rules and other government requirements inside of our platform, we handle vast majority of changes on our own.

In the event of breaking change for you (change of the specific key in the input .JSON, that would need to be sent to our platform) we notify you at least 1 month in advance, but those are extremely rare.

How often do you release updates and patches for your software?

After you have integrated with our platform, most day-to-day changes on the backend side are invisible to you. In case of a breaking change (when you must change the object sent to us), you will be notified one month in advance.

How do you make sure that the data is secured and not modified after it enters your system?

Documents are signed with a digital certificate ensuring, that they are not modified after the creation. On demand, we can also ensure that document are equipped with EU-trust time-stamps.

Can we access status regarding invoices and potential issues?

You can acces status of invoices live at the "invoice-flow control module". You can also download all the data in the .xls and .csv.

What are your contingency measures for unexpected downtimes? How are tax authority system downtimes managed?

When the tax authority is down, invoices can not access their portal.
We have two options to handle those cases, first one being to "repeat transactions". The second option is a "queing option", that if requested, have to be arranged during the integration phase. For this option, you'd have to prepare a push API end-point in your software.

Are third parties like end-customers allowed to access your dashboard?

This can be arranged based on your requirements. We can open an administration panel so that they can configure the required data & certificates for tax compliant invoicing and over-see their invoices.

What kind of issues can I encounter?

We divide the issues into three categories and handle them under publicly published terms of operations (or custom-agreed SLA if required).

What happens if Tax Authority Portal is down?

We have two options to handle those cases, first one being to "repeat transactions". The second option is a "queing option", that if requested, have to be arranged during the integration phase. For this option, you'd have to prepare a push API end-point in your software.

What happens if I my software/fiscalization device looses access to the internet?

In that case the invoices are not even coming to our system. Your software should keep track of the invoices still issued, so when you are back online, can be re-issued to our platform with a special code (should be is implemented into the UI of your software) stating that invoice were reported to tax authority post-issuing due to internet issues (it's a known use case, and every tax authority have this code).

What is your pricing structure (self-served)?

We are offering simple monthly/yearly subscription that grow with you requirements and is dependant on invoice quantity, number of legal entities using your software & functionalities. We are charging each country separately.

For individual companies and companies solving own invoicing we charge a set-up fee.

Please reach out to learn more.

What is your pricing structure (project based/enterprises)?

For companies who requested a project based approach or enterprises, the price consist of the set-up fee, platform usage fees, potential project leading fee and potential custom work.

Please reach out to learn more.

In which languages can you provide customer support and what's your timezone coverage?

We offer support in Slovenian, Serbian, Croatian and English.

The time-zone for support is CET.

What is your uptime? Do you offer SLAs about performance?

Yes, if requested. We ensure 99,5% uptime.

WHow do you store data and documents and what security mechanisms you have in place?

All received data is securely stored in a database that is not exposed to public internet. The database is backed up daily and backups are stored in encrypted form on two separate sites inside EU area. Document files are stored on a dedicated internal storage system, which is both compressed and encrypted and also has a separate redundant archive copy inside EU area. Both the data and encrypted documents are accessible to our servers that answer authenticated and authorized user requests over our API. Apart from this, your data and encrypted documents are only accessible to a limited number of internal administrative staff that can access them using a secure VPN, if needed, e.g. during an investigation of a potential problem.

How long do you store the data and documents?

The package that you choose determines if we store your data and documents either for an extended period or transiently. In the latter case, we ensure that your data and documents are deleted from all our systems inside 21-day period (but likely even sooner) after transmission via our platform. In the former case, we offer an arbitrarily long-term storage of your data and documents, as detailed in the packages.

What data do you store on your systems?

We only store the data you send to our platform explicitly, and depending on your chosen package you can decide if we delete them or store them for later use of for compliant recall or tax audits, or that we store also the documents. We never store your plain-text passwords!

Do you offer legally approved compliant e-archive?

Yes, in all EU. Because some countries explicitly require storage of the data locally or in specially approved e-archives, we solve that by adhering to these requirements on the one-by-one basis.

Can I also store generated documents (PDFs, attachments, contracts etc.) in addition to data?

Yes. There is no limit to the storage of your documents. You can decide if you'd also like to store the documents with us. See packages for more info.

How do you ensure the integrity, confidentiality, authenticity and availability of your data, documents and reported transactions?

Our databases are in 2 locations, both in EU. Both locations are ISO 27001 or regional equivalent certified. Your data is also stored on a legal archive, with EU time-stamp & e-signature if requested.