<![CDATA[PT. XYZ is a manufacturing industry supplier that uses invoices as official billing documents. However, invoice management is currently handled via Microsoft Excel, leading to potential recording errors, difficulties in data retrieval, and suboptimal monitoring of installment-based payments. Therefore, this study aims to design a website-based digital invoicing system to automate the recording process and provide payment status tracking features. The study employs a prototyping development method, enabling direct user involvement throughout the design process encompassing communication, quick planning and design, prototype construction, and delivery and feedback stages. The system is built using the Laravel framework to ensure a structured, secure, and scalable system tailored to the company's needs. Testing was conducted using the black-box method across 15 functional and interface scenarios covering input, processing, and invoice reporting. Results indicate an 88.67% success rate, with an average response time of under two seconds and a 5% error rate for key features, classifying the application as highly viable. Implementing this system offers practical benefits by improving operational efficiency in financial data reconciliation compared to the previous system. ]]>
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