How To Fix AD290 - &-& (Definición de clave externa no puede indicarse de forma completa).

SAP Error Message - Details

• Message type: E = Error

• Message class: AD - Data Dictionary application messages

• Message number: 290

• Message text: &-& (Definición de clave externa no puede indicarse de forma completa).

¿Qué causa este problema?

It is not possible to create the foreign key definition, since all key
fields in the value table (primary key fields) would have to be
assigned to foreign key fields (fields to be checked from the table
itself or possibly from another table). In this case, the assignment
would be via the common domain of the field pairs.

Respuesta del sistema

The system attempted to create a default value for this assignment, but
the corresponding fields from the table to be checked could not be
assigned to all the primary key fields.

¿Cómo arreglar este error?

To be able to activate a relationship, the assignment of primary and
foreign key fields must be complete. Any missing fields must be dealt
with manually afterwards in such a way that the fields to be checked
can come not only from the table itself but also from another table. If
an assignment is not possible, the data design of this table must be
re-examined.

Extracto de mensaje de error del sistema SAP. Copyright SAP SE.