Le code du Business Service :
 

Class EP.service.replication Extends Ens.BusinessService
{

Property Adapter As Ens.InboundAdapter;

Parameter ADAPTER = "Ens.InboundAdapter";

Property TargetConfigNames As %String(MAXLEN = 1000);

Property sync As %Boolean [ InitialExpression = 1 ];

Parameter SETTINGS = "sync:Advanced,TargetConfigNames:Basic:selector?multiSelect=1&context={Ens.ContextSearch/ProductionItems?targets=1&productionName=@productionId}";

Method OnProcessInput(pInput As %RegisteredObject, Output pResponse As Ens.StringResponse) As %Status
{
  set tSC = $$$OK
  for iTarget=1:1:$L(..TargetConfigNames, ",") {
        set tOneTarget=$ZStrip($P(..TargetConfigNames,",",iTarget),"<>W")  Continue:""=tOneTarget
        $$$TRACE("The target '"_tOneTarget_"' will be called "_$SELECT(..sync=1:"synchronously",..sync=0:"synchronously"))
        if ..sync {
          set tSC1=..SendRequestSync(tOneTarget,pInput,.pResponse)  Set:$$$ISERR(tSC1) tSC=$$$ADDSC(tSC,tSC1)
        } else {
          set tSC1=..SendRequestAsync(tOneTarget,pInput)  Set:$$$ISERR(tSC1) tSC=$$$ADDSC(tSC,tSC1)
        }
  }
  return tSC
}

/// Return an array of connections for drawing lines on the config diagram
ClassMethod OnGetConnections(Output pArray As %String, pItem As Ens.Config.Item)
{
	Do ##super(.pArray,pItem)
	If pItem.GetModifiedSetting("TargetConfigNames",.tValue) {
		For i=1:1:$L(tValue,",") { Set tOne=$ZStrip($P(tValue,",",i),"<>W")  Continue:""=tOne  Set pArray(tOne)="" }
	}
}

}

Pour illustrer avec un exemple concret, j'ai développé un flux qui devrait t'aider à réaliser ce que tu veux :

Trace avec appel asynchrone :

Trace avec appel synchrone :

Avec la réponse qui remonte bien jusqu'au Business Service :

Bonjour @Franck Hanotin 
en utilisant un paramètre, tu peux utiliser le même code sur plusieurs globales :
 

Class dc.axiell
{
Query data(globalName As %String) As %Query(ROWSPEC = "key1:%String,key2:%String,key3:%String,key4:%String,key5:%String,key6:%String,datavalue:%String") [ SqlProc ]
{
}
ClassMethod dataExecute(ByRef qHandle As %Binary, globalName As %String) As %Status
{
Set qHandle("node") = globalName
Quit $$$OK
}
ClassMethod dataFetch(ByRef qHandle As %Binary, ByRef Row As %List, ByRef AtEnd As %Boolean) As %Status [ PlaceAfter = dataExecute ]
{
Set sc = $$$OK
Set qHandle("node") = $Query(@qHandle("node"), 1, data)
If qHandle("node") = "" Set Row = "", AtEnd = $$$YES Quit $$$OK
; feeds the key x fields based on the subscripts of the global
For i=1:1:$QLength(qHandle("node")) Set $List(Row, i) = $QSubscript(qHandle("node"), i)
If i < 6 { ; if we do not have 6 subscripts, we feed the rest with an empty string
For j = i+1:1:6 Set $List(Row, j) = ""
}

Set $List(Row, 7) = data, AtEnd = $$$NO
Quit sc

}

ClassMethod dataClose(ByRef qHandle As %Binary) As %Status [ PlaceAfter = dataExecute ]
{
Kill qHandle Quit $$$OK
}

/// just for some test data
ClassMethod set() As %Status
{
set sc = $$$OK
kill ^AFO
s ^AFO("Site","Ville")="66722,3743"
s ^AFO("Site","Ville","111BB","OBT")=",MMM,XXX,"
s ^AFO("Site","Ville","111OW","OBT")=",XXX,MMM,"
s ^AFO("Site","Ville","AANVRBIBS","zzz") = "1^^1"
s ^AFO("Site","Ville","AANVRBIBS","zzz","*","dut") = "*afhalen waar gevonden"
s ^AFO("Site","Ville","AANVRBIBS","zzz","*","eng") = "*Pickup where found"
s ^AFO("Site","Ville","AANVRBIBS","zzz","*","fre") = "*Lieu où trouvé"

kill ^AAA
s ^AAA(1,2)="66722,3743"
s ^AAA(1,2,"3","4") =",MMM,XXX,"
s ^AAA(1,2,"4","5") =",XXX,MMM,"
s ^AAA(1,2,3,4) = "1^^1"
s ^AAA(1,2,3,4,"*","dut") = "*afhalen waar gevonden"
s ^AAA(1,2,3,4,"*","eng") = "*Pickup where found"
s ^AAA(1,2,3,4,"*","fre") = "*Lieu où trouvé"

kill ^BBB
s ^BBB("en") ="Hello"
s ^BBB("en","sub") ="World"
s ^BBB(1,2,3) ="BBB"
s ^BBB(1,2,3,4) = "BBB^^BBB"

kill ^CCC
s ^CCC("fr") ="Bonjour"
s ^CCC("fr","sub") ="la Communauté"
s ^CCC(1,2,3,"QUATRE","CINQ","SIX") ="6"
s ^CCC(1,2,3,4,"5","6") ="6"
s ^CCC("UN","DEUX","TROIS") ="3"

return sc
}
}

IRISAPP>:sql
SQL Command Line Shell
----------------------------------------------------

The command prefix is currently set to: <<nothing>>.
Enter <command>, 'q' to quit, '?' for help.
[SQL]IRISAPP>>select * from dc.axiell_data('^AFO')
34.     select * from dc.axiell_data('^AFO')

key1    key2    key3    key4    key5    key6    datavalue
Site    Ville                                   66722,3743
Site    Ville   111BB   OBT                     ,MMM,XXX,
Site    Ville   111OW   OBT                     ,XXX,MMM,
Site    Ville   AANVRBIBS       zzz                     1^^1
Site    Ville   AANVRBIBS       zzz     *       dut     *afhalen waar gevonden
Site    Ville   AANVRBIBS       zzz     *       eng     *Pickup where found
Site    Ville   AANVRBIBS       zzz     *       fre     *Lieu où trouvé

7 Rows(s) Affected
statement prepare time(s)/globals/cmds/disk: 0.0003s/4/139/0ms
          execute time(s)/globals/cmds/disk: 0.0023s/11/3,294/0ms
                                query class: %sqlcq.IRISAPP.cls59
---------------------------------------------------------------------------
[SQL]IRISAPP>>select * from dc.axiell_data('^AAA')
35.     select * from dc.axiell_data('^AAA')

key1    key2    key3    key4    key5    key6    datavalue
1       2                                       66722,3743
1       2       3       4                       1^^1
1       2       3       4       *       dut     *afhalen waar gevonden
1       2       3       4       *       eng     *Pickup where found
1       2       3       4       *       fre     *Lieu où trouvé
1       2       4       5                       ,XXX,MMM,

6 Rows(s) Affected
statement prepare time(s)/globals/cmds/disk: 0.0002s/4/139/0ms
          execute time(s)/globals/cmds/disk: 0.0014s/10/3,099/0ms
                                query class: %sqlcq.IRISAPP.cls59
---------------------------------------------------------------------------
[SQL]IRISAPP>>select * from dc.axiell_data('^BBB')
36.     select * from dc.axiell_data('^BBB')

key1    key2    key3    key4    key5    key6    datavalue
1       2       3                               BBB
1       2       3       4                       BBB^^BBB
en                                              Hello
en      sub                                     World

4 Rows(s) Affected
statement prepare time(s)/globals/cmds/disk: 0.0003s/4/139/0ms
          execute time(s)/globals/cmds/disk: 0.0045s/8/2,702/0ms
                                query class: %sqlcq.IRISAPP.cls59
---------------------------------------------------------------------------
[SQL]IRISAPP>>select * from dc.axiell_data('^CCC')
37.     select * from dc.axiell_data('^CCC')

key1    key2    key3    key4    key5    key6    datavalue
1       2       3       4       5       6       6
1       2       3       QUATRE  CINQ    SIX     6
UN      DEUX    TROIS                           3
fr                                              Bonjour
fr      sub                                     la Communauté

5 Rows(s) Affected
statement prepare time(s)/globals/cmds/disk: 0.0002s/4/139/0ms
          execute time(s)/globals/cmds/disk: 0.0018s/9/2,899/0ms
                                query class: %sqlcq.IRISAPP.cls59
---------------------------------------------------------------------------
[SQL]IRISAPP>>q

IRISAPP>

Bonjour Franck,
une autre façon consiste à définir un mapping utilisant le SQLStorage (comme nous avions commence à l'explorer ensemble).

Même si Lorenzo t'a déjà donné la solution avec $Query, à toute fin utile pour d'autres cas, je t'invite à consulter les articles de @Brendan Bannon  

• The Art of Mapping Globals to Classes 1 of 3 
  • mappingexample1.zip
• The Art of Mapping Globals to Classes  (2 of 3) 
  • mapping.example2.zip
• The Art of Mapping Globals to Classes (3 of 3) 
  • MappingExample3.zip
• The Art of Mapping Globals to Classes (4 of 3) 
• The Art of Mapping Globals to Classes (5 of 3

avec tous les exemples ici