Specifies 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.

The Reading/Writing Codeunit runs the Reading/Writing XMLport in cases where the data format requires that the data is read from or written to the external data file or service through an XMLport.

After processing in the Post-Mapping Codeunit, exported data is processed in the Reading/Writing XMLport prior to processing in the Ext. Data Handling Codeunit.

After processing in Ext. Data Handling Codeunit, imported data is processed in the Reading/Writing XMLport prior to processing in the Pre-Mapping Codeunit.

Mapping occurs between the Pre-Mapping Codeunit and the Post-Mapping Codeunit. The mapping definition is stored in the Data Exch. Mapping and Data Exch. Field Mapping tables.

For more information about the structure of objects in the Data Exchange Framework, see the diagrams in About the Data Exchange Framework.

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