When a master data file has been uploaded with validation errors for one or several items, "Status" will be "Incomplete", and marked orange.
"Reason" will say how many items that has been rejected on import from the total items in the master data file.
In this example, 12 items have been rejected and not imported to the portal.
A total of 112 items have been imported and can be validated and published.
The rejected items needs to be corrected and uploaded again. Could be in the same file that has previously been uploaded, with the items already been imported, or in a new file.
More information:
How to see in "Messages" why not all items have been imported?