Create reusable External Procedure transformations in the Transformation Developer, and add instances of the transformation to mappings. You cannot create External Procedure transformations in the Mapping Designer or Mapplet Designer.
External Procedure transformations return one or no output rows for each input row.
On the Properties tab of the External Procedure transformation, only enter ASCII characters in the Module/Programmatic Identifier and Procedure Name fields. You cannot enter multibyte characters in these fields. On the Ports tab of the External Procedure transformation, only enter ASCII characters for the port names. You cannot enter multibyte characters for External Procedure transformation port names.