Kailing Technology Leqi Direct Connection solution makes enterprise invoicing and invoice use more convenient and stable

Against the backdrop of the comprehensive implementation of China Golden Tax Phase IV and the adoption of fully digitalized e-invoices, corporate business-finance-tax digitalization has changed from "optional" to "mandatory." The "Leqi Service" launched by the State Taxation Administration, through direct connection between the tax system and enterprises' own information systems, provides eligible enterprises with tax-related services featuring open rules and unified standards, becoming a key lever for large enterprises to achieve business-finance-tax integration. However, the Leqi Direct Connection process faces difficulties such as complex process design, cumbersome validation logic, and high technical thresholds, and most enterprises find it hard to complete implementation independently. Kailing Technology launches a full-process Leqi Direct Connection solution, from application guidance to system integration, from function implementation to operation and maintenance support, comprehensively helping enterprises achieve "more convenient, more stable, and more compliant" invoicing and invoice use.

I. Core value of Leqi services: solving enterprise finance and tax management pain points

Leqi services are not a simple "online invoicing tool", but rather restructure enterprise tax management processes through a "system direct connection" model. Its core value differs significantly from traditional invoicing methods (such as RPA), precisely addressing high-frequency enterprise pain points:

1. Break through scenario limitations to achieve "all-weather barrier-free invoicing"

Traditional invoicing relies on the electronic tax bureau or third-party tools, which are prone to lag during peak periods at month-end/month-start and require manual face-scan authentication with uncontrollable session keep-alive time. Leqi services replace face-scan authentication with fixed IP addresses and, combined with offline invoicing, enable 365×24 uninterrupted invoicing—once business data is generated, the system automatically triggers the invoicing process without manual intervention, completely avoiding the risk of "business stoppage."

2. Enhance enterprise competitiveness, gaining "dual hidden and explicit advantages"

In large bidding and tendering projects, "Leqi-connected enterprise" has gradually become an important consideration in business cooperation, helping enterprises gain an advantage in market competition; at the same time, Leqi services respond to the national call for tax digitalization, and enterprises that actively connect can better cooperate with the competent tax authorities and may subsequently receive implicit support such as policy implementation and service connection.

3. Ensure data security and avoid "third-party transfer risks"

99% of RPA tools on the market are public cloud products. Sensitive data such as enterprise invoicing must pass through third-party platforms, posing leakage risks and potential future policy prohibition. Leqi Direct Connection, by contrast, connects the enterprise's own system directly with the tax system, so data does not pass through any third party, safeguarding data security from the source and complying with tax authorities' requirement for "autonomous data control."

II. The core threshold of Leqi Direct Connection: six major difficulties of enterprise self-integration

Although Leqi services have significant advantages, enterprises often face multiple technical and process obstacles when connecting on their own, becoming a "roadblock" to implementation:

▪ Complex process design:Leqi only provides basic interface capabilities, and enterprises need to develop the invoicing logic of their own business systems themselves, including forward/reverse processes such as blue-letter invoice issuance, red-letter confirmation form application, and invoice summary confirmation. An incorrect interface call order will cause invoicing failure;

▪ Ambiguous validation logic:The Leqi interface only returns "success/failure" for parameter passing errors and does not indicate the specific reason. Enterprises must develop many validation rules themselves (such as correctness of the invoicing party's tax number and matching of tax codes with tax rates), otherwise compliance risks are easily triggered;

▪ Difficult to combine layout files:After invoice issuance, Leqi does not provide PDF/OFD/XML layout file synthesis capabilities. Enterprises must independently develop multi-line detail layout and personalized invoice design functions; relying on tax bureau templates lacks extensibility;

▪ Cumbersome invoice type adaptation:Leqi covers more than 20 specific invoice types such as refined oil, real estate, agricultural products, and passenger transport. Each invoice type has different validation logic and process parameters, requiring enterprises to re-develop for a single invoice type;

▪ Urgency of sandbox testing:Sandbox testing requires completing all capability testing within 72 hours. If it fails, application materials must be resubmitted, and the approval cycle is long, affecting project progress;

▪ Missing operation interface:Leqi has no ready-made operation interface, and enterprises need to develop functions such as permission management, invoice filling, approval statistics, and group reports on their own, resulting in high development costs and difficult-to-guarantee usability.

III. Kailing Technology Leqi Direct Connection Solution: Full-Process Escort, Turning Difficulties into Advantages

In response to the core pain points of Leqi Direct Connection, Kailing Technology has launched consulting-Apply-Integration-Implementation-full-cycle operations and maintenance solution. Enterprises do not need to develop from scratch. Through "built-in system capabilities + customized adaptation," Leqi services can be quickly implemented while ensuring long-term stable operation.

1. Application stage: Full-process guidance, lowering entry barriers

Leqi applications have clear qualification requirements for direct connection units and user units. Kailing Technology provides "one-on-one application coaching":

▪ Qualification pre-review: assist enterprises in verifying tax credit, revenue, invoice volume and other conditions; for livelihood industries such as hospitals and thermal power, assist in applying for "special-case special approval" to lower admission standards;

▪ Material preparation: Sort out more than 10 application materials including the Leqi Direct Connection Service Access Information Form, Project Report, and software copyright certificates to ensure compliance with localized management requirements;

▪ Process follow-up: assist direct-connection entities in initiating an access application on the Leqi platform, invite user entities, obtain the Leqi ID (ptbh) and secret key, and follow up on the tax authority's review progress to ensure efficient approval.

2. Integration phase: Overcome technical difficulties, achieve "zero-code/low-code" implementation

Through a "pre-built processes + flexible configuration" model, Kailing Technology embeds the complex technical aspects of Leqi Direct Connection into the system, so enterprises do not need to invest substantial development resources:

▪ Built-in process: pre-developing full-process nodes such as blue-letter invoice issuance, red-letter confirmation application, and invoice summary confirmation; reverse processes have preset logic, with automatic verification of interface call sequence, avoiding "invoicing failure";

▪ Visualized verification: develop a "precise error reporting system" that not only indicates "verification failed" but also pinpoints the specific cause of the error, reducing manual troubleshooting costs;

▪ Layout autonomy: self-developed layout composition technology supports automatic generation of PDF/OFD/XML formats, and invoice face layout can be customized according to enterprise needs, with stronger extensibility than tax bureau templates;

▪ Full invoice type compatibility: adaptation has been completed for more than 20 specific invoice types such as refined oil, real estate, and agricultural products; newly added invoice types are promised to complete sandbox testing within 5 working days, ensuring no blind spots in enterprise business;

▪ Sandbox testing support: Provide a visual front-end page for Leqi sandbox testing, assist enterprises in completing test case verification within 72 hours, quickly locate problems after failures and resubmit, avoiding review cycle delays;

▪ Ready-Made Operation Interface: Provides the "Lingshuitong" operation platform, covering manual invoice filling, batch invoicing, approval management, invoicing statistics, group reports, and other functions, with a simple and easy-to-use interface, requiring no secondary development by enterprises.

3. Operations phase: full-service support to ensure long-term system stability

The Leqi interface may subsequently face version updates and policy adjustments. Kailing Technology has established a "full-cycle operations and maintenance assurance system":

▪ Response mechanism: Respond to issues within 10 minutes and resolve them the same day; provide 7×8-hour on-site support for urgent matters;

▪ Upgrade assurance: after Leqi interface updates, we proactively complete system adaptation, with no additional investment required from enterprises。

IV. Core function implementation: covering the full lifecycle of invoicing and invoice use

The Kailing Technology Leqi Direct Connection solution is not a "single invoicing tool," but covers "output VAT invoicing-Input management-Invoice archiving-Compliance monitoring" across the entire process, achieving a closed loop in enterprise business-finance-tax management:

1. Output VAT management: From "manual invoicing" to "automatic triggering"

▪ Automatic invoicing: connects to the enterprise's SAP, Yonyou, and self-developed business systems. After a business order is generated, it is automatically synchronized to the invoicing system. After financial review is approved, the Leqi Direct Connection interface is triggered for invoicing, with no manual entry required;

▪ Intelligent red-ink reversal: supports initiating red-ink reversal applications from the business side; the system automatically determines the invoice status. If it has already been deducted, it reminds the user to contact the invoice recipient to initiate a confirmation form; after approval, a red-letter invoice is automatically issued;

▪ Multi-channel delivery: after invoicing is completed, the system automatically sends PDF/OFD/XML invoices to customers and business personnel via email, SMS, DingTalk, etc., and simultaneously generates an invoicing ledger to avoid "delivery omissions."

2. Input management: From "manual write-off" to "intelligent matching"

▪ Automatic invoice synchronization: synchronize all input VAT invoices of the enterprise daily through tax bureau interfaces, automatically sign for electronic invoices, scan and recognize paper invoices before storing them, forming a unified enterprise invoice pool;

▪ Intelligent write-off matching: automatically matches input VAT invoices with purchase orders and goods receipt data, supports "many-to-one" and "one-to-many" write-offs, generates matching reports, and reduces manual reconciliation workload;

▪ Bulk certification and deduction: booked invoices automatically enter the selection certification pool; the group can complete certification and deduction in bulk, monitor invoice status in real time, and avoid tax risks caused by "abnormal certified invoices".

3. Fully digitalized e-invoice archiving: Complies with policy requirements, eliminating red-letter reversal risks

▪ Automatic retention of originals: synchronize fully digitalized e-invoice XML originals from the electronic tax bureau and automatically match them with enterprise accounting vouchers, meeting the Ministry of Finance and tax bureau management regulations that "electronic invoices must retain originals";

▪ Paperless archiving: achieving electronic invoice "issuance-Delivery-Booking-The entire "archiving" process is paperless, supporting quick retrieval by invoice number, date, buyer name, and other dimensions, replacing traditional paper archiving.

4. Compliance monitoring: Full-dimensional risk warnings

▪ Seller blacklist verification: real-time connection to the tax dishonesty list, verifying the seller's tax credit rating and whether it is a runaway or uncontactable enterprise, to avoid receiving "abnormal invoices";

▪ Invoice Status Monitoring: Track invoice red-ink reversal, voiding, and out-of-control status in real time. If an already certified invoice becomes abnormal, immediately remind finance to make an input tax transfer-out, reducing tax audit risk;

▪ Electronic seal verification: Automatically verifies the PDF digital signatures and OFD electronic seals of electronic invoices, eliminating "fake invoices" and "tampered invoices."

Under the major trend of China Golden Tax Phase IV's tax governance by data, Leqi Services has become the core hub for corporate business-finance-tax digital upgrading. Kailing Technology's Leqi Direct Connection solution not only helps enterprises overcome technical difficulties and quickly implement Leqi Services, but also, through full-process function coverage + full-cycle operation and maintenance assurance, enables enterprises to move from being able to use Leqi to using Leqi well, truly achieving convenient, stable, and compliant invoicing and invoice use.

To learn more about solution details or to customize a dedicated upgrade plan, please contact Kailing Technology.：https://www.kailingteck.com/h-col-123.html 。

As a comprehensive business-finance-tax digitalization solution service provider, Kailing Technology provides business-finance-tax management digital transformation products and operational services for various government agencies, institutions, and large, medium, and small enterprises. The product line includes:

Solutions for sales contract management system, procurement contract management system, fully digitalized Leqi interface project, automatic output VAT invoicing system, invoice issuance for individuals system, employee expense control and reimbursement system, input VAT invoice management system, supply chain collaborative reconciliation system, imaging OCR recognition system, automatic financial bookkeeping system, electronic accounting archives system and other businesses, comprehensively advancing the digitalization process across various fields.

If you have any business-finance-tax digital transformation needs, welcome to contact us. Beijing Kailing Technology will serve you wholeheartedly.