Per.&1/&2 can only be closed with overall status "Complete" or "Init.stg"

What causes this issue?

The period &V1&/&V2& can only be closed for a consolidation group if the
consolidation group has the overall status "complete" or "initial stage"
in both the data and consolidation monitor.
The period &V1&/&V2& can only be closed for a consolidation unit if the
consolidation unit has the the overall status "complete" or "initial
stage" in the data monitor.

System Response

Error message

How to fix this error?

Before closing period &V1&/&V2&, execute all tasks in the data monitor
and/or consolidation monitor (without errors) and block the tasks. You
can then close the period.

Error message extract from SAP system. Copyright SAP SE.