A problem occurs when special characters are entered in a Promptsets, either with AWI or with the REST API.
Special character like "öäü" are displayed as "???"
Activation report variable in UC4: TEST_???__U_?__O_?
So it is replacing all special characters with "?"
Component : Tomcat
This due to the fact that the Java Virtual Machine that runs Tomcat sources the wrong character encoding from the host system (Linux/Windows) that it is running on.
This has been observed specifically in the case of Docker containers.
The issue can be solved by adding -Dencoding=UTF-8 to the startup of the startup of Tomcat in the JAVA_OPTS variable