Specifies the codeunit that processes imported data prior to mapping and exported data after mapping.

When exporting, the Reading/Writing Codeunit reads data from an external data stream and writes it to Microsoft Dynamics NAV data. When importing, the Reading/Writing Codeunit reads Microsoft Dynamics NAV data and writes it to an external data stream.

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

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

Note
In cases where the data format requires that the data is read from or written to the external data stream through an XMLport, the Reading/Writing Codeunit runs the Reading/Writing XMLport for perform this.

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.

Tip

See Also