Ranx, Thank you for your help. I my case the solution doesn't apply. The field value being null is causing the issue.
Suppose I have Input as below the following is the output data. Even though I have mapped Input schema a field to output schema a field, if the input field value is null, dozer is not mapping to {"a":null} as output. Input Json -> {"a":null} Output Json -> {} -- View this message in context: http://camel.465427.n5.nabble.com/Camel-dozer-component-unable-to-map-custom-function-on-field-with-null-value-tp5778801p5778891.html Sent from the Camel - Users mailing list archive at Nabble.com.