# Prisma Error Reference (/docs/orm/v6/reference/errors)

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

Common Prisma ORM errors and how to troubleshoot them.

Location: ORM > v6 > Reference > Prisma Error Reference

This section provides information about common errors you might encounter when using Prisma ORM and how to resolve them.

## Error Categories [#error-categories]

### Prisma Client Errors [#prisma-client-errors]

* [**Connection Pool Issues**](https://www.prisma.io/docs/orm/v6/prisma-client/setup-and-configuration/databases-connections/connection-pool) - Troubleshoot connection pooling problems

### Prisma Migrate Errors [#prisma-migrate-errors]

* [**Migration Overview**](https://www.prisma.io/docs/orm/v6/prisma-migrate/understanding-prisma-migrate/overview) - Understanding migration concepts
* [**Shadow Database Issues**](https://www.prisma.io/docs/orm/v6/prisma-migrate/understanding-prisma-migrate/shadow-database) - Troubleshoot shadow database problems
* [**Baselining Issues**](https://www.prisma.io/docs/orm/v6/prisma-migrate/workflows/baselining) - Issues with baseline migrations

### MongoDB Errors [#mongodb-errors]

* [**Replica Set Configuration**](https://www.prisma.io/docs/orm/v6/overview/databases/mongodb) - MongoDB replica set requirements

## Full Error Reference [#full-error-reference]

For a complete list of error codes and their meanings, see the [Error Reference](https://www.prisma.io/docs/orm/v6/reference/error-reference).

## Related pages

- [`Connection URLs`](https://www.prisma.io/docs/orm/v6/reference/connection-urls): Learn about the format and syntax Prisma ORM uses for defining database connection URLs for PostgreSQL, MySQL and SQLite.
- [`Database features matrix`](https://www.prisma.io/docs/orm/v6/reference/database-features): Learn which database features are supported in Prisma ORM and how they map to the different Prisma ORM tools.
- [`Environment variables reference`](https://www.prisma.io/docs/orm/v6/reference/environment-variables-reference): This page gives an overview of all environment variables available for use.
- [`Error message reference`](https://www.prisma.io/docs/orm/v6/reference/error-reference): Prisma Client, Migrate, Introspection error message reference
- [`Preview features`](https://www.prisma.io/docs/orm/v6/reference/preview-features): Previews are typically available behind a feature flag or require some form of opt-in.