Supported field types:
RFCTYPE_DECF16
RFCTYPE_DECF34
RFCTYPE_FLOAT
RFCTYPE_BCD
RFCTYPE_INT
RFCTYPE_INT2
RFCTYPE_INT1
RFCTYPE_CHAR
RFCTYPE_BYTE
RFC_RC SAP_API RfcGetDecF34 (DATA_CONTAINER_HANDLE dataHandle, SAP_UC const* name, RFC_DECF34 *value, RFC_ERROR_INFO* info);