Hello! I have developed a plugin for Opportunity entity. Plugin registered with Sync execution, not in sandbox and executed post-operation. Plugin create custom entity in loop (typicaly 2-3 entities) Guid newGuid = Guid.Empty; for (var i = 0; i < n; i++) { new_inboxreplication inbox = new new_inboxreplication(); inbox.new_messagerecid = inboxMessage.fileId; … newGuid = service.Create(inbox); outLog.AppendLine(“Created inbox guid: ” + newGuid.ToString()); } In outLog variable i see message about returned guid from Create operation Created inbox guid: 66548a73-53c7-ec11-917c-00155d58d690 But next step is load this entity from another place, CRM throw exception new_inboxreplication With Id = 66548a73-53c7-ec11-917c-00155d58d690 Same exception is when i make request via REST Builder, looked like entity does not created… Why this can happen?