Question / Problem:
OK button grayed but all fields are green. We used Request for information and now the invoices are stuck.
Answer / Solution:
When you have used the function Request for information, you have to write an answer to the request, in the comments tab, to be able to OK the invoice.
In the verify list, check status:
In verify, check the comments tab. If orange; Check!
Type a reply and thereby confirming you have read the comment.
Now the OK button is green.