Why don't attributes values appear in the written data for the newly-defined schema?

Why don't attributes values appear in the written data for the newly-defined schema?

• A. These attributes all have missing values in the source data.
• B. Dynamic writer feature types cannot write attribute values.
• C. The schema definition mode is configured incorrectly.
• D. They are dynamically defined on the writer feature type, but the incoming features do not have matching attributes. The workspace must map the old schema onto the new one.

Answer: (D)

When you create a new output schema on the writer side and define attributes dynamically, those fields exist in the destination but they will only get values if there is a mapping from the incoming features to them. In this case, the writer has new attributes, but the incoming features don’t have matching attributes, so there’s nothing to populate those fields. To write values into the newly defined schema, you must map the old schema to the new one in the workspace—connect the input attributes to the corresponding writer attributes (using a SchemaMapper or similar attribute-mapping step). This ensures the data flows into the newly defined fields.

When you create a new output schema on the writer side and define attributes dynamically, those fields exist in the destination but they will only get values if there is a mapping from the incoming features to them. In this case, the writer has new attributes, but the incoming features don’t have matching attributes, so there’s nothing to populate those fields. To write values into the newly defined schema, you must map the old schema to the new one in the workspace—connect the input attributes to the corresponding writer attributes (using a SchemaMapper or similar attribute-mapping step). This ensures the data flows into the newly defined fields.