Case introduction: SAP and Kailing Technology · LingShuiTong fully digitalized e-invoice system integration

I. Project Environment

A certain large private enterprise group company, in order to integrate with internal ERP, CRM, and other systems, supports automated bookkeeping and reconciliation processes, driving the enterprise toward digital and paperless transformation，Integrate the SAP system withKailing Technology·Lingshuitong Fully Digitalized E-Invoice SystemIntegration was carried out, electronic invoicing is performed through the ERP interface, improving invoicing efficiency and reducing enterprise operating costs, while also realizing electronic management of invoice data and improving the efficiency and accuracy of financial work.

II. Requirements analysis

The core scenarios that need to be completed are as follows：

· Invoicing request process: The business department completes the sales order or service confirmation in the SAP system; after the system performs preliminary validation of the input data and the approval process is passed, it proactively initiates an electronic invoice issuance request, sending information such as invoice header, type, and details, which is converted through the SAP PO integration platform and sent toLingshuitongplatform, and after processing returns invoicing results, invoice numbers, electronic signatures, and other information to the SAP system.

· InvoiceRed-letter reversalProcess: When a issued electronic invoice needs correction or is no longer valid due to business changes, the business department or finance personnel initiate it in the SAP systemRed-letter reversalApplication, after approval process and tax compliance checks, send electronic invoiceRed-letter reversalInformation goes to the SAP integration platform, and the data is converted and sent toLingshuitongplatform, returns after processingRed-letter reversalResults。

The business process diagram implemented based on the SAP PO middleware integration platform is as follows：

III. Key Implementation Points of LingShuiTong

During project construction, we established an emergency response plan and have already adapted to the txt file format exported by SAP. When issues arise with interface invoicing, SAP data can be exported in txt format and directly imported into LingShuiTong's original orders for manual import invoicing, and orders can also be returned to SAP normally.

IV. Advantages of SAP and LingShuiTong system integration

· API management and operation optimization: Before the APIs deployed on the SAP PO platform are officially put into operation, the implementation consultant will prepare a detailed API list, API documentation, and related environment configuration details to ensure a smooth transition. Subsequently, with daily monitoring mechanisms, any potential API operation issues can be proactively discovered and quickly responded to, ensuring customers receive immediate feedback and maintaining high service availability.

· Accelerate application development iterations. For subsequent new interface development or adjustments to existing interfaces, the development team no longer needs cumbersome coordination directly with other system teams; instead, they can work directly with consultants familiar with SAP PO and advance work within the existing integration framework. This model greatly improves development speed while reducing long-term maintenance overhead.

Kailing Technology provides enterprise business-finance-tax digital product lines according to enterprise needs:

Solutions for businesses including sales contract management system, procurement contract management system, fully digitalized Leqi interface project, output automatic invoicing system, employee expense control and reimbursement system, input VAT invoice management system, supply chain collaborative reconciliation system, image OCR recognition system, automatic financial bookkeeping system, and electronic accounting archives system, professionally and efficiently supporting the transformation and upgrading of enterprise business-finance-tax digital management.

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