what are the methods for creating reusable transformation?
Two methods a) Design it in the transformation developer. b) Promote a standard transformation from the mapping designer.After you add a transformation to the mapping, you can promote it to status of reusable transformation.Once you promote a standard transformation to reusable status, you can demote it to a standard transformation at any time.If u change the properties of a reusable transformation in mapping , you can revert it to the original reusable transformation properties by clicking the revert.