How To Fix C1101 - No se debe fijar el indicador "entrada obligatoria"

SAP Error Message - Details

• Message type: E = Error

• Message class: C1 - Characteristics maintenance messages

• Message number: 101

• Message text: No se debe fijar el indicador "entrada obligatoria"

¿Qué causa este problema?

You want to set the "Entry required" indicator, so that a value has to
be assigned to this characteristic.
Objects have already been classified using this class. An analysis of
values already assigned has shown that, in one or more cases, no value
has been assigned to the characteristic. This contradicts the above
indicator.

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?

Deselect the field.
If you really want to enter this indicator, first check all values
assigned to this characteristic and assign values wherever no value has
been assigned.
If you choose <LS> Environment -> Where-used list</> from the
characteristics maintenance menu, you can find out where the
characteristic has been used.

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