Put/get java object on process with java delegate

Hi Frank,

Spring-Boot: (v2.2.5.RELEASE)
Camunda BPM: (v7.12.0)
Camunda BPM Spring Boot Starter: (v3.4.0)

I am trying to pass Java Object from one service task activity to another in BPMN flow
org.camunda.bpm.engine.ProcessEngineException: Cannot find serializer for value 'ObjectValue [value=org.camunda.bpm.getstarted.loanapproval.request.GetBalanceAndDateRequest@2a484710, isDeserialized=true, serializationDataFormat=application/xml, objectTypeName=null, serializedValue=null, isTransient=false]’.
at org.camunda.bpm.engine.impl.variable.serializer.DefaultVariableSerializers.findSerializerForValue(DefaultVariableSerializers.java:88) ~[camunda-engine-7.12.0.jar:7.12.0]
at org.camunda.bpm.engine.impl.persistence.entity.util.TypedValueField.setValue(TypedValueField.java:113) ~[camunda-engine-7.12.0.jar:7.12.0]

Kindly help in resolving this serialization issue