Both internal and external TN XML document types are included in the Chem eStandards PAR that you import to the Integration Server. When you import a Chem eStandards PAR, the TN XML document types, TPA, and IS docs for the respective Chem eStandards records are automatically created in Integration Server. However, there might be times that you will want to create your own internall TN XML document types or modify the provided internal TN XML document types. For more information about defining your own TN XML document types, see Defining Your Own TN XML Document Types.