Network & for sender/recipient & is activity-assigned

What causes this issue?

The sender/recipient &v2& has reference type network. This network (&v1&
) is activity-assigned, which means you have to specify an activity from
the network as an account-assignment object.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Choose a sender/recipient that does not have type network, choose a
network that has an account-assignment object that is not activity-
assigned, or enter the relevant activity.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.