Hi Sanjay, Hosting SAP UI5 package locally is indeed possible. From customer ticket I see that CP returns 404 for SAP UI5 which means "not found". Also note that the version 1.71.56 is not supported by Sinch, latest verified by us is 1.71.49. Before you update the index.html, you should make sure that the package is available over the network. In other words if you type URL to browser, you should get the package. For us it's quite hard to instruct as there might be firewalls and etc blocking. Generally I would recommend creating new folder under webapps/CommunicationPanel, for example UI5 and pointing to that one. However, that will be cleaned in upgrade and hotfix installations. So, if you wish to host SAP UI5 locally, then would prefer setting up proper network place for the package. Also I would recommend to read official statement from SAP about the topic: Set-up a CDN for SAPUI5 on your on-premise SAP ABAP Server | SAP Blogs Br, Jukka
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