Worked on updating the odoo/documentation repository to align Peruvian e-invoicing GRE configuration with recent regulatory and product changes. Focused on enhancing the documentation by revising the GRE credentials section, updating API field references, and relocating the configuration path from Accounting to Inventory in accordance with Odoo 17 updates. Added detailed guidance for configuring the Sunat Delivery Guide API, improving clarity for developers integrating GRE-based invoicing. Utilized RST for documentation and applied strong attention to regulatory compliance and onboarding needs. The work improved maintainability and reduced support requirements by making technical requirements and configuration steps more accessible and up to date.