Define network profile first

What causes this issue?

You have not entered a network profile in the project profile.
Therefore, you cannot detail dates.

System Response

INCLUDE 'NA_ALLG_NOVERARBEITUNG' OBJECT DOKU ID TX

How to fix this error?

INCLUDE 'NA_ALLG_MOEGLICH' OBJECT DOKU ID TX
Enter a network profile in the project profile.
You can also change the network profile from time scheduling.

Error message extract from SAP system. Copyright SAP SE.