Hi, The language used during processing in CPI is xml, else you have few options, .xlsx will not be working. However, there are other similar questions already like below https://community.sap.com/t5/technology-q-a/reading-an-excel-file-into-sap-cpi/...

Hello, Although this questions was asked under Integrations Suite tag, but the solution belongs to rather SF LMS area, I believe you only need to check as per following steps in this article:  KBA 2558226 - How to make/test the Learning API connectio...