How To Fix O3020 - Grupo de UM & asignado a un material; no se puede modificar ni borrar

SAP Error Message - Details

• Message type: E = Error

• Message class: O3 - IS-Oil: HPM messages (goods movements, QCI, deliveries)

• Message number: 020

• Message text: Grupo de UM & asignado a un material; no se puede modificar ni borrar

¿Qué causa este problema?

The unit of measure group has already been assigned to a material and
therefore cannot be modified or deleted.

¿Cómo arreglar este error?

Once stock is posted to a material, you cannot change the unit of
measure group for the material. The unit of measure group has to be
identical for all plants of a given material. For additional
information, read SAP note 145824.
It is recommended to use the UOM group enhancement report
?R_OIB_01_UOM_ADD_INSERT_SUM? to add a new UOM. Please, refer to OSS
Note 2328459 for usage & implementation
If any other methods are used, it can create severe inconsistency in the
database tables.

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

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