Which option best describes how to handle null values when the writer format does not support them, to ensure the workspace writes correctly?

• A. Set the advanced reader parameter 'Read Nulls as Empty' to Yes.
• B. Nothing, the writer will convert the values as necessary.
• C. Use the NullAttributeMapper to convert all <null> values to <empty>.
• D. Delete the attributes with the AttributeRemover.

Answer: (B)

Nulls can cause trouble for formats that don’t support them, but the writer stage in FME is designed to translate those null values into a representation the target format can store. The best approach is to leave the data as is and rely on the writer to perform this conversion during the write process. This avoids altering data semantics or losing information through removal or preprocessing, and it’s the same writer behavior that ensures a correct write for formats that don’t support true nulls. Options that affect reading (Read Nulls as Empty), pre-map nulls (NullAttributeMapper), or remove attributes (AttributeRemover) are unnecessary or disruptive for writing.