oblomov-dev

The page and the [abap2UI5](artifact:abap2ui5-abap2ui5) service have to share an origin: an `endpoint` that resolves to another origin is refused, and abap2UI5 rejects a POST whose `Origin` names another host. A host that routes by the URL hash, such as a Fiori elements app or an app with a UI5 router, needs abap2UI5 1.146.0 or later, because 1.145.0 clears the host's hash after every roundtrip. One frontend per page: the first control that starts decides which endpoint the frontend comes from.

Not for views built from controls outside the portable profile: sap.ui.table, sap.f, sap.uxap, sap.ui.comp and z2ui5.cc custom controls render as a visible unsupported-control box and are listed in the diagnostics, and `CONTROL_BY_ID` and `BINDING_CALL` stay unsupported. Nine frontend actions the profile allows, `DOWNLOAD_B64_FILE` and `SYSTEM_LOGOUT` among them, are skipped and reported rather than run, and formatters other than the profile's `Formatter.Date*` render a placeholder.

The class has to be moved by hand: an abapGit pull of the exported ZIP, or a paste into ADT or SE24. The palette is held to the 121 controls of UI5 1.71, and a control inserted by its class name instead comes from whatever UI5 the canvas has loaded, with nothing checking it against 1.71 - *Checks* reports that. An app class that builds no view, or more than one, is refused.

Neither suite has been run against an ABAP system: the reference backends are the framework transpiled to Node and cap2UI5 on CAP, so what a check does on a real system is open. The portable profile is a subset of 61 controls, filled from a census of 247 core apps of which 64.8 % run unchanged, so an app outside it renders placeholders in the terminal and Adaptive Cards renderers.

The 221 ports under `src/02` need a UI5 runtime newer than 1.71: they install and activate on any release, and on an older UI5 the newer control does not render. The `src/03` collection is hand-written for SAPUI5-only controls and needs a SAPUI5 bootstrap. There are no per-library branches, so pulling the whole repository is the one way in and the activation takes a few minutes.

Needs Standard ABAP 7.50 or higher, and an abap2UI5 whose frontend reserves the resourceRoot `z2ui5_cci`: a frontend predating that rename reserves `z2ui5ccc` and cannot resolve the controls. Frontend artefacts only one company needs, such as an in-house reuse library, a corporate icon font or company CSS, are what [abap2UI5-addons/custom-controls-customer](https://github.com/abap2UI5-addons/custom-controls-customer) is for, the same mechanism under the second reserved root `z2ui5_ccc`. ExportSpreadsheet needs SAPUI5: under OpenUI5 `sap.ui.export` is missing and the button renders disabled.

There is nothing here for ABAP for Cloud: the requirements name Standard ABAP releases only, and a CDS/SADL based OData service for `ABAP for Cloud` compatibility stands under Limitations & Todo.