diff --git a/F4SDM42WebApi/F4SDHelperService.cs b/F4SDM42WebApi/F4SDHelperService.cs
index cbc0e29..c6fa61b 100644
--- a/F4SDM42WebApi/F4SDHelperService.cs
+++ b/F4SDM42WebApi/F4SDHelperService.cs
@@ -305,6 +305,7 @@ namespace C4IT.F4SD
             public string InitiatorDisplayName { get; set; }
             public string InitiatorAccount { get; set; }
             public string InitiatorDomain { get; set; }
+            public string InitiatorSid { get; set; }
             public Guid RecipientId { get; set; }
             public Guid RecipientRoleId { get; set; }
             public int State { get; set; }
@@ -389,7 +390,11 @@ namespace C4IT.F4SD
                             ["StatusId"] = ConvertM42State(entry.State),
                             ["UserDisplayName"] = entry.InitiatorDisplayName ?? string.Empty,
                             ["UserAccount"] = entry.InitiatorAccount ?? string.Empty,
-                            ["UserDomain"] = entry.InitiatorDomain ?? string.Empty
+                            ["UserDomain"] = entry.InitiatorDomain ?? string.Empty,
+                            ["UserSid"] = entry.InitiatorSid ?? string.Empty,
+                            ["Sids"] = entry.InitiatorSid ?? string.Empty,
+                            ["UserId"] = entry.InitiatorId != Guid.Empty ? entry.InitiatorId.ToString() : string.Empty,
+                            ["UserGuid"] = entry.InitiatorId != Guid.Empty ? entry.InitiatorId.ToString() : string.Empty
                         },
                         Identities = new List<cF4sdIdentityEntry>
                         {
@@ -436,6 +441,7 @@ namespace C4IT.F4SD
                     ", Initiator.LastName + ISNULL(', ' + Initiator.FirstName, '') as Initiator" +
                     ", Initiator.PrimaryAccount.T(SPSAccountClassAD).NBAccountName as InitiatorAccount" +
                     ", Initiator.PrimaryAccount.T(SPSAccountClassAD).Domain.NT4Name as InitiatorDomain" +
+                    ", Initiator.PrimaryAccount.T(SPSAccountClassAD).Sid as InitiatorSid" +
                     ", Recipient as RecipientId" +
                     ", RecipientRole as RecipientRoleId" +
                     ", T(SPSCommonClassBase).State as State" +
@@ -465,6 +471,7 @@ namespace C4IT.F4SD
                         InitiatorDisplayName = getStringFromObject(row["Initiator"]),
                         InitiatorAccount = getStringFromObject(row["InitiatorAccount"]),
                         InitiatorDomain = getStringFromObject(row["InitiatorDomain"]),
+                        InitiatorSid = getStringFromObject(row["InitiatorSid"]),
                         RecipientId = getGuidFromObject(row["RecipientId"]),
                         RecipientRoleId = getGuidFromObject(row["RecipientRoleId"]),
                         State = getIntFromObject(row["State"]),