Audit & Fix ZATCA Implementation

@dvcontact

Hello Sir, I can build a comprehensive demo of the auditing and fixing solution for your ZATCA implementation before any formal commitment. My expertise in XML, SQL, and REST APIs ensures a meticulous review of your current implementation against the latest ZATCA Phase 2 requirements, identifying and resolving any issues effectively. Let's discuss your specific needs further and explore a detailed plan and demo that will guarantee your invoices pass validation without errors. Regards, Smith

@ivank69

Hi there. Which part is failing most right now, XML schema validation, cryptographic stamp generation, QR content, or the API flow with Fatoora? Are you already generating invoices for both sandbox and production from the same code path, or do you have environment-specific differences that may affect compliance? This is exactly the kind of issue that needs a full audit before changing anything blindly. Best approach is to review the full invoice pipeline end to end, validate every compliance point, isolate each failure source, and then apply fixes with repeatable tests. Worked on similar compliance-heavy integrations where invoices were being generated but failed because of a mix of data issues, XML structure problems, and signing flow mismatches. Another challenge was that some errors looked like API bugs while the real cause was upstream validation logic. Solved it by tracing the whole generation flow, validating payloads and signatures against the required format, and testing each fix through sandbox before production rollout. That made the integration stable and much easier to trust. Senior software engineer with strong backend, API, XML, and debugging experience, plus 3 years as senior security auditor on Immunefi. Comfortable with strict validation workflows and live system fixes. Ready to start immediately. Best, Ivan

@rajeshrolen

Hello, I would like to grab this opportunity and will work until you are 100% satisfied with my work. I am an experienced professional with many years of hands-on experience in XML, SQL, Software Testing, Node.js, Compliance, REST API Let’s connect in chat so that we can discuss further. Regards, Rajesh Rolen

@AffanShafiq

Hi, Good day to you. I've over 3 year of exp working with Saudi Banks in compliance, middleware and SSL/TLS certificate implementation for reliable communication of banks with Saudi Payments and SAMA. I've recently deployed 2 ZATCA E-Invoicing Solutions - one for a Bank and one for a Saudi Financial Insititution focusing on B2B and B2C invoices. The application contains QR code generation, handling digital XML signatures, Invoice PDFs and more. Looking forward to hearing from you! Best Regards.

@Hemantt841

Ensuring full compliance with ZATCA Phase 2 e-invoicing mandates is critical, especially when errors disrupt invoice validation and obscure root causes. A meticulous audit that covers every layer—from XML schema integrity and cryptographic stamp accuracy to seamless API communication with the Fatoora portal—is essential to restore confidence and operational flow. This project demands a comprehensive health check that not only identifies but also resolves all sources of failure, whether in data handling, compliance adherence, or software implementation. The approach centers on a detailed, methodical review of the existing codebase and integration architecture, leveraging expertise in XML standards, cryptographic processes, and REST API interactions. SQL queries will be employed to verify data consistency and integrity, while Node.js will facilitate any necessary backend adjustments. This ensures that the invoices generated conform precisely to ZATCA’s requirements and pass both sandbox and production validations. Testing will be exhaustive and iterative to guarantee error-free performance under live conditions. Commitment to delivering a fully compliant, production-ready system is paramount. Upon completion, a concise hand-over will clarify all identified issues and corrective measures taken, empowering you to maintain compliance confidently moving forward. Ready to begin immediately and ensure the portal reflects a green status across the board, signaling flawless ZATCA implementation. Let’s connect to initiate the audit and fix process without delay.

@ffulb

Your ZATCA Phase 2 implementation needs a systematic debug starting with the XML validation chain through to the Fatoora portal responses. I'd audit your existing codebase against current compliance specs, trace each rejection through the cryptographic stamping and QR generation, then patch the gaps. Built similar API integrations before - my trading bot handles complex REST/WebSocket flows with Bitget's finicky authentication requirements, plus I've debugged plenty of multi-step validation pipelines. You can check out my other work at ffulb.com. Need access to your current setup - codebase, database, and API credentials - so I can assess what's breaking and get the fixes rolling. Available to start immediately once I can take a look at your environment.

@srdank001

Hi, ZATCA Phase 2 issues usually come down to subtle mismatches—XML schema, signing flow, or API validation—not always obvious at first glance. I’ve worked on similar e-invoicing implementations where the challenge was isolating whether errors came from data, compliance rules, or the integration layer. I can perform a full audit of your current setup: XML structure (UBL compliance), cryptographic stamp/signature process, QR code content, and API communication with the Fatoora portal. Each issue will be clearly documented, then fixed and validated end-to-end against ZATCA sandbox and production requirements. The goal is not just “passing,” but ensuring your pipeline consistently generates compliant invoices without regressions. I’ll also provide a concise handover explaining root causes and how to maintain compliance moving forward. I focus on precision, traceability, and clean fixes—especially in regulated systems like this. Happy to review your current implementation and get it fully green. Best regards

@pedrowilberthr2

Hello, As an experienced fullstack developer, my insight and expertise extend precisely to your project needs. I have a deep understanding of the ZATCA system and have worked with REST APIs, public key infrastructure, SQL, and various language stacks, which include those used by ZATCA such as JavaScript and Golang. This familiarity ensures that any existing code is thoroughly reviewed and optimized to meet the new ZATCA Phase 2 requirements. My ability to identify and document issues meticulously aligns with your expectation for a full-scope health check. I take pride in leaving no stone unturned in identifying potential problem areas: XML structure, cryptographic stamp generation, QR content, or API communication with the Fatoora portal - all will undergo thorough scrutiny. What's more, I engineer clear fixes that are tested end-to-end so that generated e-invoices pass to validation without a hitch. A crucial factor toward the success of any project lies in knowledge sharing. I understand your need for a brief hand-over note or screen-share walk-through explaining what went wrong and how it was resolved. This guarantees that you never repeat the same mistake twice. Overall, with my holistic approach to projects, deep experience in working with mission-critical systems like ZATCA and multi-language skills; from Java to Python to Flutter- I am confident in delivering the compliant result you're looking for. Let's get your project back on track together! Thanks!

@simons356

Hello, and thanks for the clear goals. I’m Simon, and I’ve led multiple ZATCA Phase 2 health checks, fixes, and live migrations. I’ve helped teams pinpoint data-entry gaps, XML/cryptographic stamp issues, and API flows to get invoices green in both sandbox and production. I love turning complexity into a reliable, auditable path forward, and I’m excited to apply that to your audit and fix. Section 2: I’ll perform a structured review of code, schema, and the integration flow against Phase 2 requirements. I’ll document every issue, XML, QR content, stamp generation, and Fatoora API calls, and apply precise fixes with end-to-end verification. I’ll deliver a concise hand-over note or screen-share walk-through showing what was wrong and how it’s resolved. Section 3: I’ll share only relevant notes and screenshots, not the entire stack. I look forward to your green portal and a quick call to confirm next steps. Best regards, Simon

@peterj514

Hi there, You're facing still-present ZATCA Phase 2 errors, with ambiguous root causes across data-entry, compliance rules, and potential software bugs. I have spent the last 4 years solving exactly this type of problem, delivering end-to-end health checks and fixes for e-invoicing pipelines. I will perform a structured review of code, schema, and integration flow against the latest Phase 2 requirements, document every issue (XML structure, cryptographic stamp generation, QR content, and REST API calls to Fatoora), implement clear fixes, and validate end-to-end in both sandbox and production paths until green in all checks. Deliverables include a concise hand-over note or screen-share walk-through that explains what was wrong and how it was resolved so you won’t repeat the mistakes. I can work with ZATCA SDKs, REST APIs, PKI, SQL checks, and any language stack you prefer, to ensure 100% compliance and live-ready results.

@kelvinwop

Hi there, it seems you're facing crucial issues with your ZATCA e-invoicing implementation that's leading to errors and invoice rejections. For the past 4 years, I have specialized in resolving similar compliance and technical issues. I will conduct a thorough review of your current code, schema, and integration flows, ensuring they align with ZATCA Phase 2 requirements. This includes checking XML structure, cryptographic stamp generation, QR content, and the communication with the Fatoora portal. Once I identify and document all issues, I will implement clear fixes and conduct end-to-end testing to guarantee that your e-invoices meet validation requirements in both the ZATCA sandbox and production environments. After resolving the issues, I'll provide a hand-over note or a screen-share walkthrough to ensure you understand the corrections made, preventing future mistakes.

@mahads31

Hello, I’ve carefully reviewed your project Audit & Fix ZATCA Implementation and it’s something I can confidently handle. I’m a professional developer with strong experience in Software Testing, REST API, SQL, Node.js, Compliance and XML, delivering reliable and high-quality solutions with clean code and efficient performance. I ensure every project is handled with attention to detail and a results-driven approach to meet your expectations. If you’ve shared any files or details, I’ll review them and provide quick feedback. Let’s connect and get started right away you can also check my profile reviews for similar work. Regards, Mahad Sheikh

@ayesha86664

Hi there! You’re aiming for full ZATCA Phase 2 compliance, and the real challenge is pinpointing whether errors stem from data, integration, or code — that is exactly where most implementations stall. I’ve performed end-to-end system audits and fixes for complex e-invoicing workflows, ensuring XML structures, API calls, and cryptographic stamps pass all sandbox and production checks. My experience includes debugging Node.js and SQL-based pipelines to deliver fully compliant, automated invoice processing. I will review your existing code and integration flow, document every issue with clear corrections, apply tested fixes, and provide a concise walkthrough so your e-invoicing runs flawlessly and sustainably. Check our work: https://www.freelancer.com/u/ayesha86664 Do you want me to include automated test scripts for ongoing compliance verification, or just manual end-to-end validation? I am ready to start — just say the word. Best Regards, Ayesha

@kirillh3

Hello! I thoroughly understand the urgency behind your ZATCA e-invoicing mandate issues. Addressing error messages and invoice rejections can be frustrating, and it’s vital to pinpoint the root causes in your implementation. With extensive experience in SQL, Node.js, and REST APIs, I specialize in conducting comprehensive reviews against compliance requirements. I’ll perform a structured health check of your existing code and integration flow, ensuring we identify and document every issue, be it in the XML structure or API communication. My goal is to provide clear fixes that are rigorously tested. I will ensure your generated e-invoices pass both sandbox and production validations seamlessly. After resolving the issues, I’ll provide a detailed walk-through to equip you with the knowledge to avoid future pitfalls. Let’s connect and discuss how we can get your ZATCA implementation back on track!

@KanzahAfaqAhmad

Hi There, I see you're facing challenges with the Phase 2 rollout of the ZATCA e-invoicing mandate, including error messages and rejected invoices. I can help you with a comprehensive health check to identify root causes and ensure compliance with ZATCA requirements. I am Kanzah Afaq, equipped with over 7 years of experience in XML, SQL, Software Testing, Node.js, Compliance, and REST API development. My skills align perfectly with your project's needs for structured reviews, issue identification, testing, and implementation of fixes. You can view my portfolio here: https://www.freelancer.com/u/KanzahAfaqAhmad I am committed to delivering a solution that is fully compliant and live-ready, ensuring no repeat of previous errors. Looking forward to the opportunity to assist you! Thank you, Regard, Kanzah Afaq

@Yusrazubair1000

Hi There, I have carefully reviewed your job requirements regarding the ZATCA e-invoicing mandate, and I believe my expertise aligns perfectly with your needs. My extensive experience in conducting health checks and resolving complex compliance issues makes me a suitable candidate for this project. Before we proceed, I would appreciate the opportunity to ask a couple of questions: 1) Are there specific error messages you've encountered that you could share? This will help me better understand the current issues. 2) Do you have any existing documentation related to your Phase 2 implementation that I could review? 3) What is your timeline for completing this health check and implementing fixes? Why Choose Me? • Over 250 large projects completed, including compliance-focused work. • No negative feedback in 5+ years, with consistent 5-star ratings on my latest 100+ projects. • Proficient in ZATCA SDK, REST APIs, public key infrastructure, and SQL for data verification. Availability: 9 AM - 9 PM Eastern Time (Full-time freelancer) Let's discuss this further, and I'll share my latest work privately to give you an idea of my capabilities. Best regards, Syeda Yusra Zubair

@tarast7

Hello, How are you? I have checked your job description and I’m confident I can completed exactly what you need. With extensive experience in AI-driven diagnostics, ZATCA Phase 2 workflows, XML validation, PKI signing, REST integrations, and backend debugging across Node.js and SQL, I can deliver a full audit and fix of your current implementation. From reviewing schema compliance and cryptographic stamp generation to isolating API communication issues with Fatoora, I’ll ensure every point aligns with ZATCA requirements. Once all errors are resolved, I will test end-to-end until invoices pass both sandbox and production validation. A short handover or walkthrough will also be provided so everything is clear. Thanks Taras

@mubashir021

Hello, I understand your frustration with the error messages and rejected invoices in your ZATCA Phase 2 implementation, and I can help you sort this out effectively. I am Mubashir, a Full-Stack Developer with 6+ years of experience in software testing and compliance. It sounds like you need a thorough health check of your existing code and integration flow to identify and fix the issues causing these errors. 1. First, I will conduct a structured review of your existing code, schema, and integration flow against the ZATCA Phase 2 requirements to pinpoint discrepancies. 2. Then, I will identify and document every issue related to XML structure, cryptographic stamp generation, QR content, and API communication with the Fatoora portal. 3. After that, I will apply clear fixes and perform end-to-end testing to ensure that the generated e-invoices pass both ZATCA sandbox and production validation without errors. 4. Finally, I will provide a brief hand-over note or conduct a screen-share walk-through explaining the issues found and the resolutions applied to prevent future mistakes. Even if you're not sure yet, I will provide a FREE detailed quotation and project proposal with a suggested roadmap at no cost. You can use my proposal as a reference document, even if you choose to work with someone else. >>> My Work: https://www.freelancer.com/u/mubashir021 <<< Drop me a message and let's get this sorted. Mubashir

@SidUSA

Hi, The team is prepared to step in and get the ZATCA Phase 2 implementation functioning without further errors as the primary hurdles with rejected invoices usually stem from XML schema mismatches or cryptographic stamp inconsistencies within the Fatoora portal requirements. Is the current setup using the official ZATCA SDK for the UBL 2.1 generation and do the rejection codes point toward hash calculation issues or specific tag validation failures in the QR content? Quantum Code Solutions recently resolved a similar e-invoicing integration for a logistics firm that faced persistent API communication hurdles during their Phase 2 rollout where the XML structure was failing the sandbox validation due to incorrect public key infrastructure mapping. The technical lead audited the cryptographic signing process and corrected the integration flow to allow for seamless invoice submission and real-time status updates from the portal. This intervention cleared all pending error messages and allowed the client to move into production with full confidence in their compliance standing. The agency is ready to discuss the technical health check further so reach out to initiate a conversation! Best regards, Quantum Code Solutions.