How To Fix PEP235 - Ninguno de los nodos NODE_ID = &1 y &2 tiene nodo precedente

SAP Error Message - Details

• Message type: E = Error

• Message class: PEP - Schedule Manager: Messages

• Message number: 235

• Message text: Ninguno de los nodos NODE_ID = &1 y &2 tiene nodo precedente

¿Qué causa este problema?

There are at least two nodes without predecessor nodes. This is not
possible.
Technical information: Within a task group (comprising tasks of the same
PARENT_ID), all tasks are connected to one another. The content of field
NSIBLING_ID refers to the node NODE_ID of the next task. Since
such a chain of nodes can necessarily
only begin with one task, it follows that only that particular task
NODE_ID can exist in a task group without a predecessor.
If more than one node NODE_ID does not possess a predecessor (that is,
more than one node has a NODE_ID that is not referenced by any
NSIBLING_ID of another node of the same task group), the task list
is faulty.

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?

Procedimiento para Administradoras de Sistemas

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