Convert the SAP value, as it is returned by the underlying interfacing technology (e.g. the
SAP Java Connector, JCo) to the Java data type of the corresponding BAPI class field.
Convert the Java value of the corresponding BAPI class field to the data type as it is
expected by the underlying interfacing technology (e.g. the SAP Java Connector, JCo).
Example using Bean Managed Transaction (BMT): No Transaction from the Container is propagated
(see @TransactionAttribute annotation), so we do programmatic transaction handling.