# Handling exceptions and errors (Prisma ORM v7) (/docs/orm/v7/prisma-client/debugging-and-troubleshooting/handling-exceptions-and-errors)

> For the complete Prisma documentation index, see [llms.txt](/llms.txt). A markdown version of any docs page is available by appending `.md` to its URL.

This page covers how to handle exceptions and errors

Location: ORM > v7 > Prisma Client > Debugging and Troubleshooting > Handling exceptions and errors

In order to handle different types of errors you can use `instanceof` to check what the error is and handle it accordingly.

The following example tries to create a user with an already existing email record. This will throw an error because the `email` field has the `@unique` attribute applied to it.

```prisma title="schema.prisma"
model User {
  id    Int     @id @default(autoincrement())
  email String  @unique
  name  String?
}
```

Use the `Prisma` namespace to access the error type. The [error code](/guides/reference-6-v7-reference-error-reference#error-codes) can then be checked and a message can be printed.

```ts
import { PrismaPg } from "@prisma/adapter-pg";
import { PrismaClient, Prisma } from "../generated/prisma/client";

const connectionString = `${process.env.DATABASE_URL}`;
const adapter = new PrismaPg({ connectionString });
const prisma = new PrismaClient({ adapter });

try {
  await client.user.create({ data: { email: "alreadyexisting@mail.com" } });
} catch (e) {
  if (e instanceof Prisma.PrismaClientKnownRequestError) {
    // The .code property can be accessed in a type-safe manner
    if (e.code === "P2002") {
      console.log(
        "There is a unique constraint violation, a new user cannot be created with this email",
      );
    }
  }
  throw e;
}
```

See [Errors reference](/guides/reference-6-v7-reference-error-reference) for a detailed breakdown of the different error types and their codes.

## Related pages

- [`Debugging`](/guides/prisma-client-v7-debugging-and-troubleshooting-debugging): This page explains how to enable debugging output for Prisma Client by setting the `DEBUG` environment variable

## Related pages

- [Authentication & Tools](./authentication-tools-index.md)
- [Build](./build-index.md)
- [Changelog](../changelog.md)
- [Concepts](./concepts-index.md)
- [Console commands](./console-commands-index.md)
- [Contract Authoring](./contract-authoring-index.md)
- [Core Concepts](./core-concepts-index.md)
- [Data Modeling](./data-modeling-index.md)
- [Database](./database-index.md)
- [DB commands](./db-commands-index.md)

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