Developed and delivered an App Update Guidance feature for the BtcTurk integration within the FrontFin/front-web-platform-locales repository. This work introduced a dedicated AppNeedsUpdate error code, surfacing clear, localized instructions to users when an app update is required. The implementation followed standard frontend error handling patterns and focused on improving user experience by reducing confusion and minimizing support requests related to outdated app versions. Utilizing JSON for localization and error messaging, the solution ensured that update requirements were communicated effectively. The feature was tracked and committed for traceability, supporting more reliable rollouts and easier auditing of integration changes in production environments.