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ESRUO table and FM which takes care about reading/adding/deleting entries there was described in previous part ( ESDUS, ESRUO - MM settings table - Part 1/3 ), so now is the turn for ESDUS table and SETTINGS FMs.
 

ESDUS table keeps parameters mostly for MM transactions, here is the list of t-codes for which I found some entries inside ESDUS:

- IA05
- MB24
- MB25
- MB51
- MB52
- MB59
- MB5TD
- ME21N
- ME22N
- ME23N
- ME25
- ME2K
- ME32K
- ME3K
- ME51N
- ME52N
- ME53N
- ME54N
- ME55
- ME56
- ME57
- ME58
- ME5A
- ME5F
- ME5K
- ME5W
- ME80AN
- ME80FN
- ME80RN
- MIGO
- MIRO
- ML81N
- SA38
- SE38

As you see the list contains some important transactions and knowing about ESDUS can help a bit in the life of abaper.
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Let's discus following scenarios with MM standard transactions:

  1. When you open one of the MM t-codes like ME22N, ME51N or MIGO you see that always you got on the screen one of the latest open document there. Sometimes not last but one of the lasts and you want to make it always last.

  2. You create MM documents using BAPI and you want that next time you open MM t-code which is used to display/edit this document then your document appears on the screen (of course if in the meantime user haven't created anything new)

  3. You have created your own transaction to handle standard process, like creation of purchase orders or purchase requisitions. This transaction is used only in some special occasion like only in case of account assignment category is equal to 'A'. In such case for all documents which are created by your Z-transaction you've set up in user-exit that when standard transaction is called, then you leave it to your Z-transaction. In this case often MM transactions remembers last opened document, which was created by Z-transaction and at each run it will leave to it, so you want to clear the info about last called document from standard t-code.

  4. You want to clear some default settings for the user (or set them) for standard t-code. This could be default value for some fields or toggle status of the section (for example header always expanded, items always collapsed. 

In all of this cases you'll want to look at tables:
  • ESRUO (MM: Recently Used Objects)
  • ESDUS (MM: Dynamic User Settings) 
and to function group MLSO which provides you few nice FM to handle entries in this tables: 
  • ES_READ_USER_OBJECTS
  • ES_APPEND_USER_OBJECTS
  • ES_DELETE_USER_OBJECTS
  • ES_SAVE_USER_OBJECTS
  • ES_READ_USER_SETTINGS
  • ES_APPEND_USER_SETTINGS
  • ES_SAVE_USER_SETTINGS
  • ES_DELETE_USER_SETTINGS
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We have all needed methods and implicit enhancement is also created so we can create a program to call MB51. We have to create a structure for ALV and include in it type t_list from our class which I've called  zab_mb51_call so you should be able to replace it with your own name fast. In my example I will add only few fields beside the one found in MB51, but you can choose as many as it's needed. 

typesbegin of t_alv.
        include type t_list.
typesdispo like marc-dispo,
       ekgrp like marc-ekgrp,
       verid like blpk-verid,
       spart like mara-spart,
       bklas like mbew-bklas,
       rows type epsssrows,
       vendor_name type mepo_vendor,
       grtxt like t157e-grtxt,
       xabln like mkpf-xabln,
       bldat type mkpf-bldat,
      end of t_alv.

Selection-options which are the same as in MB51 should be coded with the same names so we can pass them to RM07DOCS by method call_mb51_static.
I used REUSE_ALV here just to be able to do it faster, but ALV OO can be used as well as SALV. If you copy the code bellow and you'll have problems with excel export, then you'll have ot remove it or install to your SAP abap2xlsx classes which I used in this function.
 
Program runs in following sequence:
  1. If one of the additional select-options is used then it does preselection and manipulates select-options passed to MB51
  2. Call of MB51
  3. Import of results and additional selection done on a base of the result table
  4. Output display
In attachments you'll find NUGG files for class and program.
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I can already call MB51 from previously created method but still I need to add an implicit enhancement into RM07DOCS so I'll be able to export results from MB51 and leave the program without displaying them. Enhancement must be done at the end of form process_list. 
 
 
I'll create a method to do the export inside MB51 with only one changing parameter, which will check if we're calling MB51 from our class and if yes then it will copy results of MB51 to memory and leave the program.

it_list type any table

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I've got method to get selection screen parameters to table so I can call MB51 by submitting program RM07DOCS. Of course if I do that without any changes of parameters then I would get not this list which I want (ALV kind) and MB51 would display its results on screen. That's why I need to export to memory some flags, first two must be set to be able to achieve form process_list in RM07DOCS and to get the output table for ALV, last one is my own flag which I will use in implicit enhancement to check if I should proceed with my own code and close MB51 after I'll get the results.
  • export no_list from m_flag to memory id 'MB51_NOLIST'

  • export flag from m_flag to memory id  'MB51_FLAG'.

  • export flag from m_flag to memory id 'ZMB51_FULLLIST_EXPORT'.

After submitting MB51 I'm importing results to table mt_list which is used then to move data into corresponding fields of ct_list.
  • import export to mt_list from memory id 'ZMB51_FULLLIST_EXPORT'.
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As I have needed types I can start to create methods which I need. Firstly fast method the read select-option data from any program which will call our class. I will use here FM RS_REFRESH_FROM_SELECTOPTIONS . If you're thinking about it's restrictions to keep only 40 characters from screen parameters then please check your system as for some of the new versions this FM contains a table parameter of structure RSPARAMSL_255 which allows to store up to 255 characters.
 
Importing:

i_progname type sy-repid

Changing:

it_seltab type rsparams_tt

Implementation:

method get_selection_screen_criteria.

    call function 'RS_REFRESH_FROM_SELECTOPTIONS'     
    exporting
      curr_report     i_progname
    
tables
      selection_table it_seltab
    
exceptions
      not_found       1
      no_report       2
      others          3.
    case sy-subrc.
    when 0.
    when 1.
      "raise not_found.
    when 2.
      "raise no_report.
    when others.
      "raise other_error.
    endcase.

endmethod.

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I've decided which way should I go, so now time to do it. I need to do following things to get what I desired:
  • Create a function group or class to be able to reuse the solution in other programs also
  • Create implicit enhancement in MB51 to be able to export it's results and stop MB51 if it's called from outside
  • Create a program with selection screen fields from MB51 + my own desired additional filters. This program should call standard MB51 and display some additional fields in ALV Grid.
I prefer to create a class in which I will store all needed methods to call MB51 with selection-options filled and to get back the results. 
 
I will need a type for the structure which will be used as a base type to all copy / move functions from MB51 to class and program. Bellow you'll find a type t_list which contains most of the fields which are available in MB51 (structure list in RM07DOCS). Just after t_list you'll find type tt_list which is just table type for t_list.
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It think that some of you involved in MM or PP had already a request or need to add some fields to MB51 or to call it directly with ALV grid instead of old style view. I also had such request and it contained both needs - additional fields and direct display of ALV grid. So I started to dig and debug to see what is possible to do and these possibilities I found:
  1. Copy program RM07DOCS (MB51) to Z-one and to the changes there - but I don't like such solutions so I didn't want to do that way
     
  2. Create own program which selects data from MKPF and MSEG and display it like MB51 do - but this would be to time consuming to prepare same logic like in MB51 and in case of any changes in oryginal transaction I would need to adjust program again
     
  3. Do implicit enhancement in RM07DOCS to add missing fields to the field catalog and then fill them during the call of MB51 - this would solve the first part of the request but users will have to do additional two clicks to go to ALV grid which as you may know already is sometimes to much :) Nevertheless if someone of you would like to go this way then you should do two implicit enhancements in RM07DOCS:
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