Invalid list of groups encountered.

#2061   Compile-time error

Invalid list of groups encountered.

Additional Information

The #IMPLIED group cannot appear with other groups.
    or
The #GROUPS designation may appear at most once in a list of groups, but the current action contains more than one.

Recovery

Compilation continues but no compiled source code file will be saved.

Explanation

The #implied group is always active. Therefore it is redundant to specify that it should be used along with other groups. Putting #groups in a list of groups more than once also adds no more information.