DGII eBilling API Integration

@Microlent

What stands out here is that you already understand the DGII workflow clearly, which is important because integrations like this fail mostly around authentication and signature validation, not basic API calls. For this project, we would structure the integration as a clean, modular API layer: DGII authentication flow with seed retrieval and signed authentication XAdES-BES XML signing using .PFX/.P12 certificates Reliable e-CF submission with response and TrackID handling Status inquiry endpoints with structured error management REST endpoints your ERP/POS can consume cleanly We’ve worked on similar enterprise integrations where compliance, secure signing, and external government/service APIs required stable handling and long-term maintainability. I can share a relevant integration example in chat if helpful. You’ll have a dedicated project manager ensuring communication stays structured, along with QA support to validate sandbox and production-ready flows before deployment. We focus on maintainable architecture so future DGII updates or invoice changes can be handled without major rewrites. If helpful, I can outline the recommended API structure and certification flow before we begin. Let’s open a chat and map the DGII integration process step by step. Rajesh

@kamran2012

Interesting project, I will build the REST API covering DGII authentication (seed, signing, token), e-CF XML generation with XAdES-BES digital signatures, submission handling with TrackID, and status inquiry — all wired to your ERP/POS system starting in the sandbox environment. For the XAdES-BES signing, I will structure the signature so the certificate chain is embedded correctly in the XML — a common rejection point during DGII pre-certification. Questions: 1) What stack is your ERP/POS built on — language and framework? 2) Do you already have the .PFX certificate and DGII test credentials? This bid is an initial estimate — I will confirm the final cost and timeline once we have walked through the complete requirements together. Looking forward to potentially working together. Thanks, Kamran

@ZohaibRoy

⭐⭐⭐⭐⭐ Expert Developer for DGII Electronic Billing API Integration ❇️ Hi My Friend, I hope you're doing well. I've reviewed your project requirements and see you're looking for an experienced developer in electronic billing for the Dominican Republic. You don’t need to look any further; Zohaib is here to help you! My team has successfully completed over 50 similar projects in API integration. I will efficiently create the DGII integration API that connects your ERP/POS system to the test and production environments. ➡️ Why Me? I can easily develop your DGII integration API as I have 5 years of experience in electronic billing, focusing on API development and digital signatures. My expertise includes XML handling, authentication processes, and error management. Additionally, I have a strong grip on related technologies, ensuring a smooth workflow for your project. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. I look forward to discussing this with you in our chat. ➡️ Skills & Experience: ✅ API Development ✅ Electronic Invoicing (DGII) ✅ XML Generation ✅ Digital Signatures ✅ Authentication Processes ✅ ERP/POS Integration ✅ Error Handling ✅ Token Management ✅ Endpoint Documentation ✅ Source Code Management ✅ TrackID Handling ✅ Use Case Development Waiting for your response! Best Regards, Zohaib

@chirgeo

Having implemented the full e-CF flow — seed authentication, XAdES-BES signing, and TrackID polling — against DGII's test and production endpoints, I can map this out accurately before writing a single line of code. 1. Which digital certificate do you already hold — a DGII-issued certificate tied to your RNC, or are you still in the process of obtaining one? This determines whether signing can start immediately or if there's a prerequisite blocking the timeline. 2. What language or runtime does your ERP/POS expose for integration — does it consume REST/JSON natively, or does it expect a specific format like SOAP or a flat file drop? 3. Should the REST API handle multi-RNC or multi-branch scenarios, or is this a single legal entity with one certificate covering all transactions? 4. For error handling and retries, does your system need the API to queue and retry failed submissions autonomously, or will your ERP manage retry logic on its side? Share those details and I can outline the exact architecture and flag any edge cases before we start.

@BSDesigners

Hello, I will develop a custom integration API with the DGII eBilling system in the Dominican Republic, ensuring seamless communication between your ERP/POS system and the DGII environment. The API will handle authentication, digital signature, invoice generation, submission, status inquiries, and error handling. Let's discuss your project requirements further. Thanks

@AZTURK1

Hi there, I understand you need a DGII e-CF integration connecting your ERP/POS to DGII sandbox and production using the Seed → .PFX signing → Authenticate flow and XAdES-BES XML signing; I have prior DGII integrations and ERP API work. - Implement full DGII Authentication: call /authentication/api/Seed, sign seed with provided .PFX/.P12, call /authentication/api/Authenticate and return token to your system. - Build e-CF generation, XAdES-BES XML digital signing, submission to /reception/api/ElectronicInvoices, handle responses and persist TrackID; add /checkResults/api/Inquiries/Status endpoint. - Deliver REST endpoints for issue and status, error handling mapped to DGII errors, full endpoint documentation, use cases and source code repo. - Risk/quality-control: staged deployment with sandbox pre-certification, backup checkpoint and post-fix validation before production cutover. Skills: ✅ DGII e-CF ✅ .PFX / XAdES-BES XML signing ✅ Seed Authentication (Seed → Authenticate) ✅ REST API / ERP-POS integration ✅ Digital certificate handling & security Certificates: ✅ Microsoft® Certified: MCSA | MCSE | MCT ✅ cPanel® & WHM Certified CWSA-2 Is your ERP/POS able to securely provide the .PFX/.P12 and sandbox credentials for initial testing? Best regards,

@sf264

Hello, I can develop an integration API with the DGII that will connect your ERP/POS system to the test environment and subsequently to production. I have a proven experience in electronic billing in the Dominican Republic. Let's connect via chat and discuss this project in more detail. I am looking forward to working with you, Fahad.

@mayankinnovative

Hi, As per my understanding: You need a complete DGII electronic invoicing (e-CF) integration API for the Dominican Republic that connects your ERP/POS system with the DGII sandbox and production environments. The solution must handle the full authentication workflow, XML generation, digital signing with .PFX/.P12 certificates, invoice submission, status tracking, and provide secure REST endpoints for your internal systems. Implementation approach: I would develop a modular and secure API layer that manages the entire DGII workflow including seed retrieval, digital certificate signing, token authentication, XML e-CF generation, XAdES-BES digital signatures, invoice submission, TrackID handling, and status inquiries. The architecture would expose clean REST endpoints for invoice issuance and status checks while implementing proper error handling, logging, retry logic, and validation to ensure reliable communication with DGII services. The project would also include sandbox testing, structured documentation, use cases, and organized source code for future maintenance and certification readiness. A few quick questions: 1. Which technology stack does your ERP/POS currently use? 2. Do you already have the DGII sandbox credentials and digital certificates available? 3. Will the API need to support multiple invoice types or multiple company entities? 4. Do you prefer the integration as a standalone microservice or directly embedded into your ERP infrastructure?

@mkh559a5a1fd66e9

As a seasoned Full Stack Developer with a diverse skill set spanning two decades, I'm particularly excited about the opportunity to integrate the DGII e-Billing API into your ERP/POS system. My experience implementing electronic billing systems with the DGII in the Dominican Republic puts me in a unique position to tackle this project head-on. I have facilitated complete authentication, digital signature, and electronic invoice submission processes that align with your project's scope of work. In my years of web development experience, I have acquired vital skills in XML processing, digital signatures/authentication, and .PFX certificate management which will be crucial to enabling the smooth flow of data and information between your system and the DGII's. Over a 14-year journey as a developer, I’ve honed my skills on prominent platforms such as n8n workflow automation and have extensive expertise in using .NET (C#, WPF) for back-end development, integrating with APIs, and creating ERPs. Moreover, my rich knowledge of front-end frameworks like React coupled with RESTful API design will ensure comprehensive integration for your ERP/POS system.

@deepthi2889

Hi, I am a Full stack developer in Microsoft technologies. I have vast experience on working on projects that suits your requirement exactly. You can check the reviews in my profile regarding the same. My area of expertise is web application development (Web API, ASP.Net web forms, MVC, classic ASP), Web Development ( Blazor, Angular) , web services (SOAP & RESTFul), MySql & Sql Server as back end (through stored procedures). I have 10 years of experience as a full time software developer. Kindly contact me, lets discuss your requirements.

@NEHABHAT92

With almost a decade of experience in software development, I, Neha, am well-versed in the intricate details of electronic invoicing, particularly with the DGII in the Dominican Republic. I've successfully implemented APIs that authenticate, digitally sign, and submit e-CFs to the DGII as well as check statuses using TrackIDs. My skill set extends to XML manipulations, digital signatures (.PFX) and working with REST APIs for ERPs/POS systems - all of which align perfectly with your project's requirements. Additionally, my team and I are not only capable of coding a fully-functional DGII integration API for you but also documenting its endpoints, providing use cases and of course, delivering well-commented source code. We understand the importance of adopting pre-certification procedures like the sandbox environment and are ready to take care of those dynamics for you. Furthermore, leveraging on our wide expertise in Mobile App development, we can even provide you with a mobile API if required. I strongly believe that my professional background which includes extensive experience with DGII's e-CF and certified systems coupled with my dedication to embodying your ideas into functional realities make me the best candidate for this task. At cost-effective pricing FormControl is our forte ,on-time delivery is our assurance and continued support is our commitment. Join hands so we can simplify and streamline your electronic book keeping system while also optimizing you

@alizain721

You need a DGII eCF integration that reliably handles seed auth, .PFX signing, XML generation and TrackID lifecycles — not just a proof of concept but something you can certify and run in production. Common failures come from certificate handling time skew and signature canonicalization issues, so the integration must validate certificates, timestamps, and map DGII errors to actionable retries. I built Tranero, a tax invoice submission platform that submits UBL batches to a national tax API, handles ERP sync, retries and full submission logs — same problem space and reliability needs. Plan 1) Implement seed flow: fetch seed, sign with .PFX, call Authenticate and store token securely 2) Build XML generator and sign using XAdES BES with proper canonicalization and timestamping 3) Submit to reception endpoint, capture TrackID and persist submission record 4) Provide status endpoint that queries TrackID and a retry policy for recoverable DGII errors 5) Deliver REST endpoints for issue and status, docs, use cases and source code Do you have sandbox .PFX and test credentials, plus a sample invoice mapping from your ERP? Also which stack do you prefer for the REST API PHP Python .NET or Node.js? I can prepare an architecture diagram and endpoint spec once you share that.

@bpatidar2793

How are you planning to handle certificate management, XML signature validation, and DGII response retries without causing invoice submission failures in production? I understand this integration requires reliable e-CF workflows, secure authentication handling, XAdES-BES signing, ERP/POS interoperability, and production-safe API architecture. I can build a structured DGII integration layer with secure certificate processing, robust error handling, status tracking, and maintainable REST API workflows for sandbox and production environments.

@shameelarif

Drawing from my six years of experience and my knowledge working with XML, digital signatures, and .PFX certificates, I guarantee a smooth and efficient integration of your ERP/POS system with the DGII. Beyond just fulfilling the scope of integrating with DGII endpoints, I will deliver a functional API that interacts seamlessly and delivers the desired results. This includes providing you with endpoint documentation, use cases, and complete source code. In addition to API integration work, I command strong skills in Node.js—a technology known for building high-performance scalable applications as well as Python - an ideal stack for jobs like these. If required, I can bring onboard my software architecture competency to ensure all components align harmoniously to meet your project goals. Importantly, I am well-versed with DGII systems and their Seed Authentication Process which gives me an edge in effectively handling the digital certificate-based security measures. In summary, I offer extensive experience in electronic billing integrations in addition to adeptness in API development. My commitment to building quality digital tools that drive growth coupled with my breadth of skills make me not just the right choice but

@adisonw

Dear Sir, I am thrilled to bid your project. I can develop a reliable DGII e-CF integration API that connects your ERP/POS system with the Dominican Republic electronic billing sandbox first, then prepares the same structure for production. I have experience with XML generation, .PFX/.P12 certificates, digital signatures, authentication flows, invoice submission APIs, TrackID handling, status checks, and ERP/POS integrations. For your scope, I will implement seed retrieval, seed signing with the digital certificate, DGII authentication token generation, e-CF XML creation, XAdES-BES signing, invoice submission, response handling, and status inquiry by TrackID. I will also build REST endpoints for your system to issue invoices, check statuses, and return clean DGII error responses that are easy for your ERP/POS to process. My approach will be systematic: review your invoice data structure, map required e-CF fields, build authentication, generate and sign XML, test submission in sandbox, handle edge-case errors, document endpoints, and prepare production configuration. I will provide source code, API documentation, sample requests/responses, and use cases for future maintenance. One simple but crucial question: do you already have the DGII sandbox credentials and test certificate, or should I help validate those before implementation? Sincerely, Adison.

@jagratip3

Dear Hiring Manager, I have extensive experience building and deploying real estate websites for agents and brokerages, including full installation on client-hosted servers like HostGator. I can take a pre-built template or custom code, integrate your MLS feed, configure all fields (including images, listings, and search filters), and ensure the site is fully functional and optimized for your users. Here are examples of real estate sites/templates I have completed and can replicate or adapt for you: Example 1 – Residential Listings Template Example 2 – Brokerage Website Example 3 – IDX/MLS Integrated Portal I will ensure: MLS integration with all 40 fields and image links correctly populated. Responsive, mobile-friendly design. Smooth installation and testing on your HostGator environment. Delivery within [insert realistic timeframe, e.g., 5–7 days]. I understand that functional MLS integration is critical, and I guarantee the site will work out-of-the-box with your access credentials. Thank you for your time and consideration.

@jay8mac

Lets chat, a free consultation and no obligation. I understand you need a clean, professional, and user-friendly solution for your "DGII eBilling API Integration" project. My skills in PHP, Java, JavaScript are a perfect fit for this project. While I am new to freelancer.com, my extensive experience delivers integrated, automated solutions. Regards, Jason McLachlan

@fizaa170

I can build a secure DGII integration API with authentication flow, XML generation, digital signatures, invoice submission, and status tracking while keeping the architecture clean and ERP ready for production rollout. A few questions: which ERP or POS system will consume the API, do you already have the DGII sandbox credentials and digital certificates ready, and should the API support multiple companies or a single business setup? Best regards, Muzammil

@mike3608

I understand the need for a robust API to integrate your ERP/POS system with DGII for electronic invoicing. With extensive experience in XML, digital signatures (.PFX/.P12), and API development, I am well-equipped to handle authentication, e-CF generation, submission, and status checks with DGII. I'm excited to leverage my background in ERP/POS integrations to deliver a functional, well-documented API that meets your requirements.