Im fairly new to biztalk and trying to configure an 837P to be converted to a flat file CSV file. I have everything built but I get the strange error The document type "http://schemas.microsoft.com/Edi/X12#X12_TA1_Root" does not match any of the given schemas. I don't understand why I am getting this error, no where am I refrencing this. So I will explain how its setup. User gives a hippa 837 and the edi receive pipeline grabs it then in the send pipeline I have the map that converts it to the flat file csv. I also have a custom send pipeline. The send pipeline just does flat file assemble using the csv schema mentioned above. Where the heck is it trying to reference the ta1 acknowledgement schema?? I have done some testing and looked at the file before the send port try's to process it and it has this at the top <ns0:X12_TA1_Root IsGeneratedAck="true" xmlns:ns0="http://schemas.microsoft.com/Edi/X12"><TA1><TA101>000000001</TA101><TA102>130710</TA102><TA103>1422</TA103><TA104>A</TA104><TA105>000</TA105></TA1></ns0:X12_TA1_Root> and then the rest of the data. I am confused.. I have the party setup so it shouldn't be generating any sort of acknowledgement files. The weird thing about this is that this exact same setup works on our production enviornment but not our development enviorment and they both generate this error. I am stumped. Any Ideas??