The one that could assist you is this article: https://knowledge.broadcom.com/external/article/135699/clarity-api1019-error-when-trying-to-ope.htmlAPI-1019%20Error%20when%20trying%20to%20open%20a%20project%20in%20the%20Modern%20UX Scroll to the bottom of it and it says: Tip: The API-1019 error code can also mean you are attempting to use a Studio attribute in the New User Experience that does not have a valid REST API alias name
See matching posts in thread - After you have searched this forum and CA Educat...
See matching posts in thread - So it should be: query=(project = project/388404...