This blog post discusses the challenges businesses face when integrating their existing ERP systems with the Zakat, Tax, and Customs Authority`s (ZATCA) Fatoora portal during Phase 2 of Saudi Arabia`s e-invoicing rollout. While Phase 1, introduced on December 4, 2021, mandated e-invoicing for resident taxpayers, Phase 2—initiated on January 1, 2023—calls for real-time invoice clearance and reporting. Many legacy or heavily customized ERP systems lack the external integration capabilities required for compliance, prompting the need for specialized solutions. The article highlights that ZATCA currently offers APIs rather than a dedicated e-invoicing platform, which can complicate compliance for certain businesses. To address this gap, Accqrate provides a middleware module that facilitates seamless data collection, validation, XML generation, secure communication with ZATCA`s servers, and the delivery of approved invoices in both PDF and XML formats. By leveraging Accqrate`s technology, organizations can meet Saudi Arabia`s evolving e-invoicing requirements—even if their ERP systems are limited in external integration capabilities.