Message SAP WTADDI404 - Current line &1 already exists in line &2: duplicated key

Diagnosis
You are presently creating additionals. While doingso, you have entered data in line &V1& that already appears as akey in line &V2&.
No single combination of sales unit,class type,class, and additional mayappear more than once in the table. This combination forms the(primary) key for accessing the database. The key must always beunique.

Procedure
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 acombination of sales unit, class type, and class with two differentprocedures for additionals