ND Labyrinth

I've been trying to post the provenance for the requested items, but so far, although I have the info from the list, and the dates, receivers, etc. from the catalog, not one piece I've submitted has been accepted. The message says the info is basically, incorrect. I have everything asked for, but no go. What am I missing?

I wonder - did you get the Provenance book from Niobe?
Did you check the catalogs in the closet?
Did you take pictures of those items and added them to the computer?