How To Fix WTADDI404 - Current line &1 already exists in line &2: duplicated key

SAP Error Message - Details

• Message type: E = Error

• Message class: WTADDI - Additionals: Messages

• Message number: 404

• Message text: Current line &1 already exists in line &2: duplicated key

What causes this issue?

You are presently creating <GL:additional>additionals</>. While doing
so, you have entered data in line &V1& that already appears as a
<ZH>key</> in line &V2&.
No single combination of sales unit,
<DS:GLOS.3526B516AFAB52B9E10000009B38F974>class type</>,
<DS:GLOS.3526B515AFAB52B9E10000009B38F974>class</>, and additional may
appear more than once in the table. This combination forms the
(primary) key for accessing the database. The key must always be
unique.

How to fix this error?

Check your entries in the current line for:
Sales unit
Class type
Class
Additional
&hints&
It is not possible to affix an additional to merchandise for a
combination of sales unit, class type, and class with two different
<DS:GLOS.Anbringungsmethode>procedures for additionals</>

Error message extract from SAP system. Copyright SAP SE.