SAP ST DATA DECLARATIONS documentation, setup help and example usage

ARTICLE

ST - Data Declarations
In ST programs, data can be declared using the following statements:

tt:root defines data roots for ABAP data interfaces.

tt:parameter defines parameters as formal parameters.

tt:variable defines variables as local data.

If these statements are specified outside of a template in the context of the transformation, the data declarations apply for the main template .
Within a subtemplate , the statements can be used in the element tt:context to declare local data of the subtemplate.