Work item & cannot be read

What causes this issue?

The work item with the specified ID can either not be read completely
or partly (for example, its container).

System Response

The action was cancelled and the work item, if it still exists, set to
<ZH>error</> status.

How to fix this error?

Check whether the work item has already been deleted or whether only
parts of it can no longer be read.
In the latter case, the work item is inconsistent.

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

INCLUDE NA_WF-ADMINISTRATOR OBJECT DOKU ID TX

Error message extract from SAP system. Copyright SAP SE.