How To Fix MC231 - La clave externa de & a & no existe.

SAP Error Message - Details

• Message type: E = Error

• Message class: MC - Aggregate: views, matchcodes, lock objects

• Message number: 231

• Message text: La clave externa de & a & no existe.

¿Qué causa este problema?

No foreign key relationship was maintained yet between the primary
table and one of the secondary tables of the aggregate.
The secondary tables of an aggregate must be connected with the primary
table of this aggregate by means of foreign key relationships. This
connection can also be transitive.

Respuesta del sistema

El sistema emite un mensaje de error y no le permitirá continuar con esta transacción hasta que se resuelva el error.

¿Cómo arreglar este error?

Go to the single field maintenance of the corresponding secondary
table. Position the cursor to the field for which the foreign key should
be maintained and go to the foreign key maintenance screen by selecting
the function <LS>Foreign keys</>.

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