How To Fix CM126 - No existe ninguna operación permitida

SAP Error Message - Details

• Message type: E = Error

• Message class: CM - Task list messages: Material component allocations

• Message number: 126

• Message text: No existe ninguna operación permitida

¿Qué causa este problema?

You cannot allocate or reallocate a material component because there is
no operation to which a material component can be allocated or
reallocated.
This is the case, for example, if the operations have been
referenced from a reference operation set.

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