UCS0321 - Task &1: 'Incomplete' due to status of succession tasks

SAP Error Message - Details

• Message type: E = Error

• Message class: UCS0 - Messages for Status Management

• Message number: 321

• Message text: Task &1: 'Incomplete' due to status of succession tasks

What causes this issue?

In one of the following ways, the executed task &v1& is a preceding task
of tasks in another version or in a dependent restatement:
The task itself or one of its successor tasks is the source task of a
copy task, such that the copy task in the target version is the
successor task of the executed task.
You are using a restatement with reference. In this restatement, the
current task or one of its successor tasks is implicitly the successor
task of the same task in the reference statement.
<ZH>For at least one such successor task, the system cannot set the
status <ZK>Incomplete</> because the period in the relevant version or
restatement is closed, or you do not have sufficient authorization to
change the status.</>
The additional messages of the task execution contain detailed
information about this.

System Response

For the task &v1&, the system sets the status <ZK>Incomplete</> instead
of <ZK>Without Errors, Without Warnings</> or <ZK>No Errors With
Warnings</>.
If you execute a unit-based task on a consolidation group, the system
sets the status <ZK>Incomplete</> for <ZH>all </>units in the group.
This also applies if the situation described above occurs only for <ZH>
one</> of the consolidation units in the group.

How to fix this error?

Make sure that the system can set the status of all successor tasks
correctly, that is, open the period or assign the relevant autho
rization.
Then execute the current task again. Then as expected, the system sets
the status <ZK>Without Errors, Without Warnings</> or <ZK>No Errors With
Warnings</>.

Procedure for System Administrators

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.