diff --git a/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterArtEventCommandHandler.cs b/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterArtEventCommandHandler.cs
index 6735d62..045ccf7 100644
--- a/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterArtEventCommandHandler.cs
+++ b/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterArtEventCommandHandler.cs
@@ -5,6 +5,8 @@
 using PERUSTARS.ArtEventManagement.Domain.Model.Commads;
 using PERUSTARS.ArtEventManagement.Domain.Model.Repositories;
 using PERUSTARS.ArtEventManagement.Domain.Model.ValueObjects;
+using PERUSTARS.ProfileManagement.Domain.Model.Aggregates;
+using PERUSTARS.ProfileManagement.Domain.Repositories;
 using PERUSTARS.Shared.Domain.Repositories;
 
 namespace PERUSTARS.ArtEventManagement.Application.ArtEvents.Commands
@@ -13,30 +15,32 @@ public class RegisterArtEventCommandHandler : IRequestHandler<RegisterArtEventCo
     {
         private readonly IArtEventRepository _artEventRepository;
         private readonly IUnitOfWork _unitOfWork;
-        public RegisterArtEventCommandHandler(IArtEventRepository artEventRepository, IUnitOfWork unitOfWork)
+        private readonly IArtistRepository _artistRepository;
+        public RegisterArtEventCommandHandler(IArtEventRepository artEventRepository, IUnitOfWork unitOfWork,IArtistRepository artist)
         {
             _artEventRepository = artEventRepository;
             _unitOfWork = unitOfWork;
+            _artistRepository = artist;
         }
 
         public async Task<string> Handle(RegisterArtEventCommand request, CancellationToken cancellationToken)
         {
             //Primero se debe validar si existe el artista con el Id dado
-
+            Artist artist=await _artistRepository.GetArtistByIdAsync(request.ArtistId);
             //"return No existe el Artista con el Id dado"
             //-----------------------------------
+            if(artist==null) {
+                return "This artist doesn't exist!!";
+            }
+
             var artEvent = new ArtEvent(
-                id: 0,
                 title: request.Title,
                 description: request.Description,
                 startDateTime: request.StartDateTime,
                 Location: request.Location,
                 isOnline: request.IsOnline,
                 artistId: request.ArtistId,
-                currentStatus: ArtEventStatus.REGISTERED,
-                Participants:null,
-                Artist:null,
-                collected:false
+                Artist:artist
                 );
             await _artEventRepository.AddAsync(artEvent);
             await _unitOfWork.CompleteAsync();
diff --git a/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterParticipantToArtEventCommandHandler.cs b/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterParticipantToArtEventCommandHandler.cs
index 0ac57bd..8b01182 100644
--- a/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterParticipantToArtEventCommandHandler.cs
+++ b/PERUSTARS/PERUSTARS/ArtEventManagement/Application/ArtEvents/Commands/RegisterParticipantToArtEventCommandHandler.cs
@@ -30,8 +30,8 @@ public RegisterParticipantToArtEventCommandHandler(IParticipantRepository partic
         }
         public async Task<string> Handle(RegisterParticipantToArtEventCommand request, CancellationToken cancellationToken)
         {
-            ArtEvent artEvent = _artEventRepository.FindByIdAsync(request.artEventId).Result;
-            Hobbyist hobbyist = _hobbyistRepository.FindByIdAsync(request.hobbyistId).Result;
+            ArtEvent artEvent = await _artEventRepository.FindByIdAsync(request.artEventId);
+            Hobbyist hobbyist = await _hobbyistRepository.FindByIdAsync(request.hobbyistId);
             Domain.Model.Aggregates.Participant participant = new Domain.Model.Aggregates.Participant(
                 id: 0,
                 userName: "A",
diff --git a/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/ArtEvent.cs b/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/ArtEvent.cs
index aa52eaa..c102e00 100644
--- a/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/ArtEvent.cs
+++ b/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/ArtEvent.cs
@@ -8,7 +8,7 @@ namespace PERUSTARS.ArtEventManagement.Domain.Model.Aggregates
     public class ArtEvent
     {
         
-        public long? Id { get; set; }
+        public long Id { get; set; }
         public string Title { get; set; }
         public string Description { get; set; }
         public DateTime? StartDateTime { get; set; }
@@ -18,10 +18,26 @@ public class ArtEvent
         public Artist Artist { get; set; }
         public ArtEventStatus? CurrentStatus { get; set; }
         public IEnumerable<Participant> Participants { get; set; }
-        public bool Collected { get; set; }
+        public bool Collected { get; set; }=false;
 
         public ArtEvent() { }
-        public ArtEvent(long? id, 
+        public ArtEvent(string title,
+            string description,
+            DateTime? startDateTime,
+            Location Location, bool? isOnline,
+            long? artistId,
+            Artist Artist) {
+            Title = title;
+            Description = description;
+            StartDateTime = startDateTime;
+            this.Location = Location;
+            IsOnline = isOnline;
+            ArtistId = artistId;
+            this.Artist = Artist;
+            this.CurrentStatus = ArtEventStatus.REGISTERED;
+            this.Participants= new List<Participant>();
+        }
+        public ArtEvent(long id, 
             string title, 
             string description, 
             DateTime? startDateTime, 
diff --git a/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/Participant.cs b/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/Participant.cs
index b794584..85fcf50 100644
--- a/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/Participant.cs
+++ b/PERUSTARS/PERUSTARS/ArtEventManagement/Domain/Model/Aggregates/Participant.cs
@@ -28,7 +28,7 @@ public Participant(long id, string userName, DateTime registerDateTime, DateTime
             ArtEventId = artEventId;
             Hobyst = hobbyist;
             ArtEvent = artEvent;
-            Collected = collected;
+            Collected = false;
         }
     }
 }
diff --git a/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ArtEventsController.cs b/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ArtEventsController.cs
index 095e79f..f3df852 100644
--- a/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ArtEventsController.cs
+++ b/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ArtEventsController.cs
@@ -72,7 +72,7 @@ public async Task<IActionResult> getByArtist(int id) {
             IEnumerable<ArtEvent> events= _artEventQueryService.getArtEventByArtistId(id);
             return Ok(events);
         }
-        [HttpPost("art-events/{id}/participant")]
+        [HttpPost("art-events/participant")]
         public async Task<IActionResult> createParticipant([FromBody] RegisterParticipantToArtEventCommand registerParticipantToArtEvent) { 
             string response= await _artEventCommandService.registerParticipantToArtEvent(registerParticipantToArtEvent);
             return Ok(response);
diff --git a/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ParticipantsController.cs b/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ParticipantsController.cs
index 9030667..794a3c9 100644
--- a/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ParticipantsController.cs
+++ b/PERUSTARS/PERUSTARS/ArtEventManagement/Interfaces/REST/ParticipantsController.cs
@@ -24,7 +24,7 @@ public ParticipantsController(IMapper mapper, IParticipantQueryService participa
             _participantCommandService=participantCommandService;
         }
 
-        [HttpGet]
+        [HttpGet("participants")]
         public async Task<IActionResult> getParticipants()
         {
             IEnumerable<Participant> participants = _participantQueryService.GetParticipants();