Object type &1 is not a valid object type for task editing
Message type: E = Error
Message class: 5W - Messages for PD (Particularly Workflow)
Message number: 307
Message text: Object type &1 is not a valid object type for task editing
What causes this issue?
All object types that are allowed as agents (agent types) are defined
in table T779O.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Error message extract from SAP system. Copyright SAP SE.