Understanding Lock Objects with Enqueue and Dequeue FMs

[Former Member]

Hi,

I have created lock object for a custom table and I am trying to understand the various options in the Function Modules that get automatically generated, please explain me whether I am using all these options correctly and what is the use of the various options

CALL FUNCTION 'ENQUEUE_EZZZZZZ'
   EXPORTING
     mode_ZZZZZZ          = 'E'
     mandt                = sy-mandt
     field1                = i_ZZZZZZ-field1
     field2              = i_ZZZZZZ-field2
*   X_FIELD1           = ' '
*   X_FIELD2         = ' '
*   _SCOPE               = '2'
     _wait                = 'X'
*   _COLLECT             = ' '
   EXCEPTIONS
     foreign_lock         = 1
     system_failure       = 2
     OTHERS               = 3
            .
  IF sy-subrc <> 0.
    MESSAGE ID sy-msgid TYPE sy-msgty NUMBER sy-msgno
            WITH sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  ENDIF.

  MODIFY ZZZZZZ FROM i_ZZZZZZ.

  CALL FUNCTION 'DEQUEUE_EZZZZZZ'
   EXPORTING
     mode_ZZZZZZ          = 'E'
     mandt                = sy-mandt
     field1                = i_ZZZZZZ-field1
     field2              = i_ZZZZZZ-field2
*   X_FIELD1           = ' '
*   X_FIELD2         = ' '
*   _SCOPE            = '3'
*   _SYNCHRON         = ' '
*   _COLLECT          = ' '

Field 1 and Field 2 are the key fields in this table, I would like to know whether I need to pass on these values even when I am inserting a record...

Also how I can use these below options in Enqueue FM

• X_FIELD1 = ' '

• X_FIELD2 = ' '

• _SCOPE = '2'

• _WAIT

• _COLLECT

and the below ones in Dequeue

• _SCOPE = '3'

• _SYNCHRON = ' '

• _COLLECT = ' '

[Former Member]

http://help.sap.com/saphelp_nw04/helpdata/en/cf/21eebf446011d189700000e8322d00/content.htm

Got the answer.