A SAPUI5 application may work perfectly through a standalone approuter but fail with HTTP 401, 403, 404, OData-routing, or Content Security Policy errors when launched through SAP Build Work Zone.
In this experience-based article, I explain the architecture I designed and developed to support standalone and managed approuters using a single SAPUI5 codebase and SAP CAP backend. The article covers runtime-aware OData URL resolution, XSUAA authentication, user-token propagation, Destination service, HTML5 Application Repository, MTA deployment, VizFrame CSP configuration, and the troubleshooting lessons I learned while implementing the solution.
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