ID for large green caterpillar please

ID for large green caterpillar please

Observation - ID for large green caterpillar please. Description: came across this fine caterpillar on the foot path at the edge of a harvested field. there is a stream to one side and various species of tree.

came across this fine caterpillar on the foot path at the edge of a harvested field.
there is a stream to one side and various species of tree.