Hello, I am new on Discogs and I keep getting this shipping error, and I can't figure out where I am going wrong. Can someone please help me??

request.shipment.tax_identifiers[0].identifier_type: was not a nullable type Parameter name: Name

You'll probably have far better luck posting this in the Marketplace > Shipping forum:

http://www.e-healthmachine.com/forum/topic/7433

Thank you.