When you want to retrieve the data that record in long text on selected document for show in ABAP report, you can apply function module "READ_TEXT".

Example

        DATA: I_LINE   LIKE TLINE  OCCURS 0 WITH HEADER LINE.
        CALL FUNCTION ’READ_TEXT’
             EXPORTING
                  ID                      = ’Z002’
                  LANGUAGE                = SY-LANGU
                  NAME                    = LV_NAME
                  OBJECT                  = ’VBBK’
             TABLES
                  LINES                   = I_LINE    "Long text
             EXCEPTIONS
                  ID                      = 1
                  LANGUAGE                = 2
                  NAME                    = 3
                  NOT_FOUND               = 4
                  OBJECT                  = 5
                  REFERENCE_CHECK         = 6
                  WRONG_ACCESS_TO_ARCHIVE = 7
                  OTHERS                  = 8.