ORA-36155: (XSMXAGGRFROM) workspace object must be a variable or formula of a similar data type to workspace object to be used with FROM, or a TEXT variable or formula to be used with FROMVAR
Cause: The user specified an illegal variable for use with FROM or FROMVAR on the AGGREGATE command line
Action: Specify a legal variable instead
https://support.oracle.com/
http://www.oracle.com/