---
schema: rendered-html/v1
title: "REST API Troubleshooting | Developer Portal for YouTrack and Hub Documentation"
source_url: https://www.jetbrains.com/help/youtrack/devportal/api-troubleshooting.html
generated_at: 2026-06-11T15:00:35.281141+00:00
---

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Developer Portal for YouTrack and Hub

- Developer Portal
- Apps
- MCP Tools
- YouTrack Workflows
- YouTrack Import Scripts
- YouTrack Form API
- YouTrack REST API
- Get Started with REST API
- REST API Reference
- [REST API Use Cases](jetbrains__com__help__youtrack__devportal__api-use-cases.md)
- [REST API Troubleshooting](api-troubleshooting.html)
- [400 Bad Request When Adding a Custom Field Value to a Set](jetbrains__com__help__youtrack__devportal__api-troubleshoot-incorrect-request-url.md)
- [400 Bad Request When Creating an Issue Without Required Field Value](jetbrains__com__help__youtrack__devportal__api-troubleshoot-missing-type.md)
- [400 Bad Request When Updating a Conditional Field](jetbrains__com__help__youtrack__devportal__api-troubleshoot-updating-conditional-field.md)
- [500 Server Error When Updating a Custom Field](jetbrains__com__help__youtrack__devportal__api-troubleshoot-incorrect-field-type.md)
- [500 Server Error When Adding a Field to a Project](jetbrains__com__help__youtrack__devportal__api-troubleshoot-custom-field-prototype.md)
- Color Indices List
- Hub REST API

1. YouTrack REST API
2. [REST API Troubleshooting](#0)

# REST API Troubleshooting﻿

Last modified: 07 May 2026

In this section, you will find:

- Examples of errors you might get while making requests to YouTrack REST API.
- Suggestions how to update these requests and fix the errors.

Here is the list of topics in this section:

- [400 Bad Request When Adding a Custom Field Value to a Set](jetbrains__com__help__youtrack__devportal__api-troubleshoot-incorrect-request-url.md)
- [400 Bad Request When Creating an Issue Without Required Field Value](jetbrains__com__help__youtrack__devportal__api-troubleshoot-missing-type.md)
- [400 Bad Request When Updating a Conditional Field](jetbrains__com__help__youtrack__devportal__api-troubleshoot-updating-conditional-field.md)
- [500 Server Error When Updating a Custom Field](jetbrains__com__help__youtrack__devportal__api-troubleshoot-incorrect-field-type.md)
- [500 Server Error When Adding a Field to a Project](jetbrains__com__help__youtrack__devportal__api-troubleshoot-custom-field-prototype.md)

[Add User to Project Team](jetbrains__com__help__youtrack__devportal__api-usecase-add-user-to-team.md)[400 Bad Request When Adding a Custom Field Value to a Set](jetbrains__com__help__youtrack__devportal__api-troubleshoot-incorrect-request-url.md)

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