Create a process. Create a new process variable without Data Type. Close and open properties panel. Try to add new process variable. Actual result When the process properties are being loaded, the two same error messages are shown: error retrieving data types After trying to add new process variable, System error occurs: Uncaught exception: Exception caught: undefined Caused by: undefined It is not possible to create, edit or delete the variable. Expected result No error messages are shown. It is possible to create, edit or delete the variable.