title: BizTalk 2009 "Invalid character in data element" error
body: <p>In some of our BizTalk 2009 development environments, when attempting to process a HIPPA X12 file, 4010 270 file type, any element defined in the schema to be type X12_AN is throwing an "Invalid character in data element" error; e.g. NM103__InformationReceiverLastOrOrganizationName. The invalid character that it is complaining about is the letter "U". It's only the capital letter "U" and not a lowercase "u". </p>
  
  <p>This error only presents in our development environments that exist in Citrix VDIs running Windows Server 2003 R2 Enterprise X64 Edition. The instance of BizTalk Server 2009 installed on the VDIs has been updated with the most recent hotfix.</p>
  
  <p>So far, I tried everything I can think of from converting the input file encoding, to retyping the entire file manually. I recompiled and deployed both the schemas and maps. I even enabling and disabling EDI validation at the party level. Nothing seems to be working.</p>
  
  <p>Has anyone seen this type of error before? Is there any way to modify or override the character set that is used for element validation in BizTalk?</p>
  
  <p>Any information that you can offer would be greatly appreciated!</p>