I tried to predict using PMML that exported using One to Many (PMML), but doesn't works with external predictor.(e.g. JPMML, JPMML-Spark)
I think this is because of the fields that One to Many to applies are not defined as MiningField, So it can not get the value to apply.
This behavior occurs in all Transformation Nodes (e.g. Numeric Binner).
Quoting the use of PMML 4.2:
> All data entering a model must pass through the MiningSchema.
Also, as an implementation of JPMML, it is assumed that the field to which Transformation is applied is defined as MiningField.