Task with category "valid. standardized data" must be blocked first

What causes this issue?

Before you can post using a document type of this posting level, you
must have executed the task with the category "validation of
standardized financial data" (contained in the relevant task group for
the data monitor) without errors and then blocked it.

System Response

Error message

How to fix this error?

Check the status of the task with the category "validation of
standardized financial data" in the data monitor, after you have
executed it without errors.

Error message extract from SAP system. Copyright SAP SE.