Oracle Solution for Error ora-35280

ORA-35280: (SNSYN165) The format of the AGGREGATE command is: AGGREGATE varname1 [varname2 varname3 ...] [USING aggmap-name] [COUNTVAR intvar-name1 [intvar-name2 intvar-name3 ...]] [FUNCDATA] [FORCEORDER] [PARALLEL #] [{FROM|FROMVAR} fromname [, fromname2 ...]]

What triggered the Error:

The user used incorrect syntax for the AGGREGATE command.

What should we do to fix it:

Correct the calling syntax.