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		Hi Saad,
 it seems like a bug, as documented in the note that I sent you.
 Read that note, do the revelant checking.. If your situation is the same as the situation explained in the document, then consider applying the patch 14154715:R12.POS.B.
 
 Updating Taxpayer ID & Default Reporting Registration Number on Supplier Throws Error (Doc ID 1451302.1)
 
 
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