You must specify the a of filter if you want to save you filter- dependent

I get this message when I try to save an implementation for BADI : NOTIF_EVENT_SAVE

Specify filter types

Message no. ENHANCEMENT213

Diagnosis

You must specify the a of filter if you want to save you filter- dependent BAdI implementation.

System Response

Without a filter type, the implementation cannot be saved.

Procedure

Enter a filter type.

The filter type already exists. This is a standard SAP BADI.

There are related notes but not for my ECC 6.0 release.

I am using: SAP_BASIS 700 SAPKB70013

Has anyone had this problem?