1. In the Search box, enter Data Exchange Definitions, and then choose the related link.

2. On the Home tab, in the New group, choose New.

3. On the General FastTab, describe the data exchange definition and the data file type by filling the fields as described in the following table.

   Field	Description
   Code	Enter a code to identify the data exchange definition.
   Name	Enter a name for the data exchange definition.
   File Type	Specify what type of file that the data exchange definition is used for. You can select between three file types: XML: Layered strings of content and markup surrounded by tags indicating function. Variable Text: Records have variable length and are separated by a character, such as comma or semi-colon. Also known as delimited file. Fixed Text: Records have the same length, using pad characters, and each record is on a separate line. Also known as fixed-width file.
   Type	Specify what type of business activity the data exchange definition is used for, such as Payment Export.
   Data Handling Codeunit	Specify the codeunit that transfers data in and out of tables in Microsoft Dynamics NAV.
   Validation Codeunit	Specify the codeunit that is used to validate data against pre-defined business rules.
   Reading/Writing Codeunit	Specify the codeunit that processes imported data prior to mapping and exported data after mapping.
   Reading/Writing XMLport	Specify the XMLport through which an imported data file or service enters prior to mapping and through which exported data exits when it is written to a data file or service after mapping.
   Ext. Data Handling Codeunit	Specify the codeunit that transfers external data in and out of the Data Exchange Framework.
   User Feedback Codeunit	Specify the codeunit that does various clean-up after mapping, such as marks the lines as exported and deletes temporary records.
   File Encoding	Specify the encoding of the file. Note This field is only relevant for import.
   Column Separator	Specify how columns in the data file are separated, if the file is of type Variable Text.
   Header Lines	Specify how many header lines exist in the file. This makes sure that the header data is not imported. Note This field is only relevant for import.
   Header Tag	If a header line exists in several positions in the file, enter the text of the first column on the header line. This makes sure that the header data is not imported. Note This field is only relevant for import.
   Footer Tag	If a footer line exists in several positions in the file, enter the text of the first column on the footer line. This makes sure that the footer data is not imported. Note This field is only relevant for import.

4. On the Line Definitions FastTab, describe the formatting of lines in the data file by filling the fields as described in the following table.

   Note
   For import of bank statements, you only create one line for the single format of the bank statement file that you want to import. For export of payments, you can create a line for each payment type that you want to export. In that case, the Column Definitions FastTab shows different columns for each payment type.

   Field	Description
   Code	Enter a code to identify the line in the file.
   Name	Enter a name that describes the line in the file.
   Column Count	Specify how many columns the line in data file has. Note This field is only relevant for import.
   Data Line Tag	Specify the position in the related XML schema of the element that represents the main entry of the data file. Note This field is only relevant for import.
   Namespace	Specify the namespace that is expected in the file, to enable namespace validation. You can leave this field blank if you do not want to enable namespace validation.

5. Repeat step 4 to create a line for every type of file data that you want to export.

   Proceed to describe the formatting of columns in the data file by filling the fields on the Column Definitions FastTab as described in the table below. You can use the structure file, such as an .XSD file, for the data file to prefill the FastTab with the relevant elements. For more information, see How to: Use XML Schemas to Prepare Data Exchange Definitions.

6. On the Column Definitions FastTab, choose Get File Structure.

7. In the Get File Structure window, select the related structure file, and then choose the OK button. The lines on the Column Definitions FastTab are filled according to the structure of the data file. For more information, see Get File Structure and How to: Use XML Schemas to Prepare Data Exchange Definitions.

8. On the Column Definitions FastTab, edit or fill the fields as described in the following table.

   Field	Description
   Column No.	Specify the number that reflects the column’s position on the line in the file. For XML files, specify the number that reflects the type of element in the file that contains the data.
   Name	Specify the name of the column. For XML files, specify the markup that marks the data to be exchanged.
   Data Type	Specify if the data to be exchanged is of type Text, Date, or Decimal.
   Data Format	Specify the format of the data, if any. For example, MM-dd-yyyy if the data type is Date. Note For export, specify the data format according to Microsoft Dynamics NAV. For more information, see Identifiers, Data Types, and Data Formats. For import, specify the data format according to .Net. For more information, see Standard Date and Time Format Strings.
   Data Formatting Culture	Specify the culture of the data format, if any. For example, en-US if the data type is Decimal to make sure that comma is used as the .000 separator, according to the US format. For more information, see Standard Date and Time Format Strings. Note This field is only relevant for import.
   Length	Specify the length of the fixed-width line that holds the column if the data file is of type Fixed Text.
   Description	Enter a description of the column, for information.
   Path	Specify the position of the element in the related XML schema.
   Negative-Sign Identifier	Enter the value that is used in the data file to identify negative amounts, in data files that cannot contain negative signs. This identifier is then used to reverse the identified amounts to negative signs during import. Note This field is only relevant for import.
   Constant	Specify any data that you want to export in this column, such as extra information about the payment type. Note This field is only relevant for export.

9. Repeat step 8 for every column or XML element in the data file that has data that you want to exchange with Microsoft Dynamics NAV.

The next step in creating a data exchange definition is to decide which columns or XML elements in the data file map to which fields in Microsoft Dynamics NAV.

Note

The specific mapping depends on the business purpose of the data file to be exchanged and on local variations. Even the SEPA bank standard has local variations. Microsoft Dynamics NAV supports import of SEPA CAMT bank statement files out-of-the-box. This is represented by the SEPA CAMT data exchange definition record code in the Data Exchange Definitions window. For information about the specific field mapping of this SEPA CAMT support, see Field Mapping When Importing SEPA CAMT Files.

1. On the Line Definitions FastTab, select the line for which you want to map columns to fields, and then choose Field Mapping. The Field Mapping window opens.

2. On the General FastTab, specify the mapping setup by filling the fields as described in the following table.

   Field	Description
   Table ID	Specify the table that holds the fields to or from which data is exchanged according to the mapping.
   Use as Intermediate Table	Specify if the table that you select in the Table ID field is an intermediate table where the imported data is stored before it is mapped to the target table. You typically use an intermediate table when the data exchange definition is used to import and convert electronic documents, such as vendor invoices into purchase invoices in Microsoft Dynamics NAV. For more information, see Data Exchange.
   Name	Enter a name for the mapping setup.
   Pre-Mapping Codeunit	Specify the codeunit that prepares the mapping between fields in Microsoft Dynamics NAV and external data.
   Mapping Codeunit	Specify the codeunit that is used to map the specified columns or XML data elements to fields in Microsoft Dynamics NAV.
   Post-Mapping Codeunit	Specify the codeunit that completes the mapping between fields in Microsoft Dynamics NAV and external data. Note When using the Bank Data Conversion Service feature, the codeunit converts exported data from Microsoft Dynamics NAV to a generic format that is ready for export. For import, the codeunit converts external data to a format that is ready for import into Microsoft Dynamics NAV.

3. On the Field Mapping FastTab, specify which columns map to which fields in Microsoft Dynamics NAV by filling the fields as described in the following table.

   Field	Description
   Column No.	Specify which column in the data file that you want to define a map for. You can only select columns that are represented by lines on the Column Definitions FastTab in the Data Exchange Definition window.
   Field ID	Specify which field the column in the Column No. field maps to. You can only select from fields that exist in the table that you specified in the Table ID field on the General FastTab.
   Optional	Specify that the map will be skipped if the field is empty. Note If you do not select this check box, an export error will occur if the field is empty. Note This field is only relevant for export.
   Target Table ID	Only visible when the Use as Intermediate Table check box is selected. Specify the table that the value in the Column Caption field is mapped to, when you are using an intermediate table for data import.
   Target Table Caption	Only visible when the Use as Intermediate Table check box is selected. Specify the name of the table in the Target Table ID field, which is the table that the value in the Column Caption field is mapped to, when you are using an intermediate table for data import.
   Target Field ID	Only visible when the Use as Intermediate Table check box is selected. Specify the field in the target table that the value in the Column Caption field is mapped to, when you are using an intermediate table for data import.
   Target Field Caption	Only visible when the Use as Intermediate Table check box is selected. Specify the name of the field in the target table that the value in the Column Caption field is mapped to, when you are using an intermediate table for data import.
   Optional	Only visible when the Use as Intermediate Table check box is selected. Specify if the map should be skipped if the field is empty. If you do not select this check box, then an export error will occur if the field is empty.

The data exchange definition is now ready to be enabled for users. For more information, see How to: Set Up Electronic Document Sending and Receiving, How to: Set Up SEPA Credit Transfer, How to: Set Up SEPA Direct Debit, How to: Set Up the Bank Data Conversion Service.

When you have created the data exchange definition for a specific data file, you can export the data exchange definition as an XML file that can be used to quickly enable import of the data file in question. This is described in the following procedure.