How to read ABAP return parameter into java code

Hi all,
How JAVA environment can trap an error returned from abap code?
E.g.:
From a BAPI wrapper written like this:
"function zpm_gi_create .
""Interfaccia locale:
*" IMPORTING
*"     VALUE(ZBAPIGOODSMVT) TYPE ZBAPIGOODSMVT
*" EXPORTING
*"     VALUE(RETURN) TYPE BAPIRET2
*"     VALUE(PO_NUMBER_ES) TYPE ZBAPIEKKO-PO_NUMBER
*" TABLES
*"      GOODSMVT_ITEM STRUCTURE ZGOODSMVT_ITEM
data: goodsmvt_header type bapi2017_gm_head_01,
        return2         type bapiret2 occurs 0 with header line,
call function 'BAPI_GOODSMVT_CREATE'
    exporting
      goodsmvt_header             = goodsmvt_header
      goodsmvt_code               = zbapigoodsmvt-gm_code
      testrun                     = 'X'
importing
GOODSMVT_HEADRET   GM         =
    materialdocument              = matdoc
    matdocumentyear               = matyear
tables
    goodsmvt_item                 = gm_item
GOODSMVT_SERIALNUMBER       =
      return                      = return2.
Our return (for istance is):
"EBM                  312The (internal) unit xx has not been maintained in
the unit table"
How JAVA environment can trap this error or interpret the BAPIRET2 structure?
Is there something to do in the corresponding syncBO?
regards,
eliana

Hi elina ,
these topic is already discussed in forum.
Jo has replied to this doubt in these links.
Re: Return messages in SyncBo
Can't see RETURN parameter in SyncBO
Return messages in SyncBo
just note this..
have to change like this , when u follow the help.
if (messageReply.getType() == MessageReplyType.SYNC_BEGIN) {
          if (messageReply.getType() == MessageReplyType.SYNC_END) {
            Regards
              Kishor Gopinathan

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