Plugin Pre Operation Create - Update field error

Question

My plugin fire on Pre Create operation on Entity X. When trying to update a field on the Entity X using the following code I am getting error: ``` trEntity = (Entity)context.InputParameters["Target"]; trGuid = (Guid)trEntity.Id; tr = (Entity)service.Retrieve("EntityX", trGuid, new ColumnSet(new string[] { "field_a", "field_b" })); tr["field_a"] = null; service.Update(tr); ``` The error I am getting is: Entity X with Id = 11505683-2292-b537-e311-143710e56fb7 Does Not Exist

Accepted Answer

Since you are in `Pre-Create`, the entity doesn't exist yet in the database.

You don't need to explicitly call Update in a `Pre` event. You can just update the `Target` entity (`trEntity` in your case) and the changes you make will be saved with the `Create` operation. The `Target` entity is the actual entity that is about to be created, so feel free to update fields directly on the `Target` in the Pre event.

```
trEntity = (Entity)context.InputParameters["Target"];
trEntity["field_a"] = null;
```

Plugin Pre Operation Create - Update field error

Solution

Problem