diff --git a/src/ReC.Application/Common/Procedures/InsertProcedure/InsertObjectProcedure.cs b/src/ReC.Application/Common/Procedures/InsertProcedure/InsertObjectProcedure.cs
index a2b0f46..3e59de7 100644
--- a/src/ReC.Application/Common/Procedures/InsertProcedure/InsertObjectProcedure.cs
+++ b/src/ReC.Application/Common/Procedures/InsertProcedure/InsertObjectProcedure.cs
@@ -1,4 +1,5 @@
 using DigitalData.Core.Abstraction.Application.Repository;
+using DigitalData.Core.Exceptions;
 using MediatR;
 using Microsoft.Data.SqlClient;
 using ReC.Application.Common.Exceptions;
@@ -7,6 +8,7 @@ using ReC.Application.EndpointParams.Commands;
 using ReC.Application.Endpoints.Commands;
 using ReC.Application.Results.Commands;
 using ReC.Application.Profile.Commands;
+using ReC.Application.Common.Options;
 
 namespace ReC.Application.Common.Procedures.InsertProcedure;
 
@@ -41,7 +43,7 @@ public static class InsertObjectProcedureExtensions
     }
 }
 
-public class InsertObjectProcedureHandler(IRepository repo) : IRequestHandler<InsertObjectProcedure, long>
+public class InsertObjectProcedureHandler(IRepository repo, SqlExceptionOptions sqlExceptionOptions) : IRequestHandler<InsertObjectProcedure, long>
 {
     public async Task<long> Handle(InsertObjectProcedure request, CancellationToken cancel)
     {
@@ -110,18 +112,31 @@ public class InsertObjectProcedureHandler(IRepository repo) : IRequestHandler<In
             }
         };
 
-        await repo.ExecuteQueryRawAsync(
-            "EXEC [dbo].[PRREC_INSERT_OBJECT] " +
-            "@pENTITY, @pADDED_WHO, @pADDED_WHEN, " +
-            "@pACTION_PROFILE_ID, @pACTION_ACTIVE, @pACTION_SEQUENCE, @pACTION_ENDPOINT_ID, @pACTION_ENDPOINT_AUTH_ID, @pACTION_ENDPOINT_PARAMS_ID, @pACTION_SQL_CONNECTION_ID, @pACTION_TYPE_ID, @pACTION_PRE_SQL, @pACTION_HEADER_SQL, @pACTION_BODY_SQL, @pACTION_POST_SQL, @pACTION_ERROR_ACTION_ID, " +
-            "@pENDPOINT_ACTIVE, @pENDPOINT_DESCRIPTION, @pENDPOINT_URI, " +
-            "@pENDPOINT_AUTH_ACTIVE, @pENDPOINT_AUTH_DESCRIPTION, @pENDPOINT_AUTH_TYPE_ID, @pENDPOINT_AUTH_API_KEY, @pENDPOINT_AUTH_API_VALUE, @pENDPOINT_AUTH_API_KEY_ADD_TO_ID, @pENDPOINT_AUTH_TOKEN, @pENDPOINT_AUTH_USERNAME, @pENDPOINT_AUTH_PASSWORD, @pENDPOINT_AUTH_DOMAIN, @pENDPOINT_AUTH_WORKSTATION, " +
-            "@pPROFILE_ACTIVE, @pPROFILE_TYPE_ID, @pPROFILE_MANDANTOR, @pPROFILE_NAME, @pPROFILE_DESCRIPTION, @pPROFILE_LOG_LEVEL_ID, @pPROFILE_LANGUAGE_ID, " +
-            "@pRESULT_ACTION_ID, @pRESULT_STATUS_ID, @pRESULT_HEADER, @pRESULT_BODY, " +
-            "@pENDPOINT_PARAMS_ACTIVE, @pENDPOINT_PARAMS_DESCRIPTION, @pENDPOINT_PARAMS_GROUP_ID, @pENDPOINT_PARAMS_SEQUENCE, @pENDPOINT_PARAMS_KEY, @pENDPOINT_PARAMS_VALUE, " +
-            "@oGUID OUTPUT",
-            parameters,
-            cancel);
+        try
+        {
+            await repo.ExecuteQueryRawAsync(
+                "EXEC [dbo].[PRREC_INSERT_OBJECT] " +
+                "@pENTITY, @pADDED_WHO, @pADDED_WHEN, " +
+                "@pACTION_PROFILE_ID, @pACTION_ACTIVE, @pACTION_SEQUENCE, @pACTION_ENDPOINT_ID, @pACTION_ENDPOINT_AUTH_ID, @pACTION_ENDPOINT_PARAMS_ID, @pACTION_SQL_CONNECTION_ID, @pACTION_TYPE_ID, @pACTION_PRE_SQL, @pACTION_HEADER_SQL, @pACTION_BODY_SQL, @pACTION_POST_SQL, @pACTION_ERROR_ACTION_ID, " +
+                "@pENDPOINT_ACTIVE, @pENDPOINT_DESCRIPTION, @pENDPOINT_URI, " +
+                "@pENDPOINT_AUTH_ACTIVE, @pENDPOINT_AUTH_DESCRIPTION, @pENDPOINT_AUTH_TYPE_ID, @pENDPOINT_AUTH_API_KEY, @pENDPOINT_AUTH_API_VALUE, @pENDPOINT_AUTH_API_KEY_ADD_TO_ID, @pENDPOINT_AUTH_TOKEN, @pENDPOINT_AUTH_USERNAME, @pENDPOINT_AUTH_PASSWORD, @pENDPOINT_AUTH_DOMAIN, @pENDPOINT_AUTH_WORKSTATION, " +
+                "@pPROFILE_ACTIVE, @pPROFILE_TYPE_ID, @pPROFILE_MANDANTOR, @pPROFILE_NAME, @pPROFILE_DESCRIPTION, @pPROFILE_LOG_LEVEL_ID, @pPROFILE_LANGUAGE_ID, " +
+                "@pRESULT_ACTION_ID, @pRESULT_STATUS_ID, @pRESULT_HEADER, @pRESULT_BODY, " +
+                "@pENDPOINT_PARAMS_ACTIVE, @pENDPOINT_PARAMS_DESCRIPTION, @pENDPOINT_PARAMS_GROUP_ID, @pENDPOINT_PARAMS_SEQUENCE, @pENDPOINT_PARAMS_KEY, @pENDPOINT_PARAMS_VALUE, " +
+                "@oGUID OUTPUT",
+                parameters,
+                cancel);
+        }
+        catch (SqlException ex)
+        {
+            if (sqlExceptionOptions.SqlExceptionNumber.Contains(ex.Number))
+                throw new BadRequestException(
+                    $"Insert '{request.Entity}' failed because one or more referenced entities do not exist. " +
+                    "Please verify the supplied identifiers and try again.\n" +
+                    ex.Message, ex);
+            else
+                throw;
+        }
 
         var guidParam = parameters.Last();