Dynamics AX Purchase UOM Problem

Bad item in questionHello - we use AX 2012 and have a new item that is not allowing the user to change the "Purch ID" under the Default Order Settings in Manage Inventory of the item to the "THOU" unit, which is a valid UOM in the system.  There are other items in the system where this is able to be done, so there is something about this new item that is preventing it.  What I'll do is attach 2 screen shots - 1 for a normal item that works, and another for the new item in question.  Thanks for your help

Damian GardnerIT AdminAsked:
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Damian GardnerIT AdminAuthor Commented:
Bad item in question
Damon ReptonOwner\DirectorCommented:

what is the base UOM?? on both items? and is there a conversion in place from base to pruch UOM?

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Damian GardnerIT AdminAuthor Commented:
Hello Damon.  I'm not as fluent in AX yet, so can you help me find where the base would be?  I did check to see if there was an ""intra-class conversion for both items, and neither one has a conversion rule unique to those specific item codes.
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Damian GardnerIT AdminAuthor Commented:
I believe I found it.  looks like Purchase is EA and Sell is THOU. see screen shot
Damian GardnerIT AdminAuthor Commented:
I changed it and it now works.  that was simple.  thanks for leading me there!
Damon ReptonOwner\DirectorCommented:
yes that's it, but its mainly Purchase and stock are inline or have conversions i.e

a box = 10 x Each etc
Damon ReptonOwner\DirectorCommented:
great :)
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