Hi Kosta,    As per you solution I am still facing same error to render/generate PDF from XDP + XML data.  I refered the same URL as mentioned by Adobe https://experienceleague.adobe.com/docs/experience-manager-learn/forms/document-services/generate-interactive-dor.html?lang=en.  I just did some min...

Please elabroate more. 

Either Cloud Admin need to give an access your email id which is registered on AIMS (Adobe Identity Management System)  or your org is registered domain in AIMS, so your company id will become federated id. Federated ID will work same as Company Portal Login Page. 

you need to embed this jar and put dependecy on top in dependecy management of parennt pom or bundle pom.