Informix Error -4097: Multiple declarations for class "name".

Cause and resolution

Multiple declarations for class "name".

This class has been declared previously in the source module (perhaps in an included file). Only one declaration is allowed. Find all declarations of the class, and reduce them to one.

Oninit® Troubleshooting Guidance

Reasons / Common Causes

-4097 fires when a class is declared more than once in the source module (possibly via an included file) — per the official guidance, only one declaration per class is allowed.

A class declared more than once, possibly across multiple INCLUDEd files, per the official guidance — the direct, only cause.

Solutions / Resolution

Find all declarations of the class, and reduce them to one, per the official guidance.

Examples

Including a class definition twice

INCLUDE "order_class.4gl"
INCLUDE "order_class.4gl"
-- -4097: Order is declared twice

Corrected

INCLUDE "order_class.4gl"

Diagnostic Checks

Check every INCLUDE in the module for files that declare the same class more than once, and remove the duplicate.

Related Errors / Related Topics

No closely related error codes are cross-referenced for -4097 in this set yet.

A class is declared more than once, likely via a duplicate INCLUDE — reduce it to one declaration.