TN_parms → Document (optional) An IS document (IData object) that holds ʺhintsʺ that Trading Networks uses when performing document recognition for a flat file document. See information about document gateway services in the webMethods Trading Networks Administrator’s Guide for details on providing recognition hints.
In your TN doctype you set a pipeline matching variable, you can use whatever you want say the name is ‘Transaction Type’. Then you set a variable under the TN_parms to match eg. Transaction Type and set the value to match what you put in TN doctype. Then you route it to TN (such as via recognize and routeBizdoc)