info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
If the app requires additional permissions, [the update must first be manually approved in Jira](https://developer.atlassian.com/platform/marketplace/upgrading-and-versioning-cloud-apps/#changes-that-require-manual-customer-approval).
1. On the left sidebar, select **Applications** (`/admin/applications`).
1. Select **New application**.
1. In **Redirect URI**:
- If you're installing the app from the official marketplace listing, enter `https://gitlab.com/-/jira_connect/oauth_callbacks`.
- If you're installing the app manually, enter `<instance_url>/-/jira_connect/oauth_callbacks` and replace `<instance_url>` with the URL of your instance.
1. Clear the **Trusted** and **Confidential** checkboxes.
1. In **Scopes**, select the `api` checkbox only.
1. Select **Save application**.
1. Copy the **Application ID** value.
1. On the left sidebar, select **Settings > General** (`/admin/application_settings/general`).
1. Expand the **GitLab for Jira App** section.
1. Paste the **Application ID** value into **Jira Connect Application ID**.
1. Select **Save changes**.
1. Optional. Enable the `jira_connect_oauth` [feature flag](../../administration/feature_flags.md) to avoid [authentication problems in some browsers](#browser-displays-a-sign-in-message-when-already-signed-in).
## Connect the GitLab for Jira Cloud app for self-managed instances **(FREE SELF)**
It's not possible to create branches from Jira for self-managed instances. For more information, see [issue 391432](https://gitlab.com/gitlab-org/gitlab/-/issues/391432).
1. Install the GitLab application from your Jira instance as
described in the [Atlassian developer guide](https://developer.atlassian.com/cloud/jira/platform/getting-started-with-connect/#step-3--install-and-test-your-app):
on your instance configuration. By default, your manifest file is located at `/-/jira_connect/app_descriptor.json`. For example, if your GitLab self-managed instance domain is `app.pet-store.cloud`, your manifest file is located at `https://app.pet-store.cloud/-/jira_connect/app_descriptor.json`.
1. Disable [development mode](https://developer.atlassian.com/cloud/jira/platform/getting-started-with-connect/#step-2--enable-development-mode) on your Jira instance.
For more information about creating a Marketplace listing, see the [Atlassian documentation](https://developer.atlassian.com/platform/marketplace/installing-cloud-apps/#creating-the-marketplace-listing).
## Configure your GitLab instance to serve as a proxy for the GitLab for Jira Cloud app **(FREE SELF)**
1. [Install the GitLab for Jira Cloud app manually](#install-the-gitlab-for-jira-cloud-app-manually).
Other GitLab instances that use the proxy must configure the **Jira Connect Proxy URL** and the [OAuth application](#set-up-oauth-authentication-for-self-managed-instances) **Redirect URI** settings to point to the proxy instance.
## Security considerations
The GitLab for Jira Cloud app connects GitLab and Jira. Data must be shared between the two applications, and access must be granted in both directions.
### Access to GitLab through OAuth **(FREE SELF)**
GitLab does not share an access token with Jira. However, users must authenticate through OAuth to configure the app.
An access token is retrieved through a [PKCE](https://www.rfc-editor.org/rfc/rfc7636) OAuth flow and stored only on the client side.
The app frontend that initializes the OAuth flow is a JavaScript application that's loaded from GitLab through an iframe on Jira.
The OAuth application must have the `api` scope, which grants complete read and write access to the API.
This access includes all groups and projects, the container registry, and the package registry.
However, the GitLab for Jira Cloud app only uses this access to:
- Display namespaces to be linked.
- Link namespaces.
Access through OAuth is only needed for the time a user configures the GitLab for Jira Cloud app. For more information, see [Access token expiration](../oauth_provider.md#access-token-expiration).
To resolve this issue, set up [OAuth authentication](#set-up-oauth-authentication-for-self-managed-instances) and enable the `jira_connect_oauth` [feature flag](../../administration/feature_flags.md).
You might get an error if you have installed the GitLab for Jira Cloud app from the official marketplace listing and replaced it with manual installation. To resolve this issue, disable the **Jira Connect Proxy URL** setting.
If the GitLab for Jira Cloud app continuously fails to sync data, it may be due to an outdated secret token. Atlassian can send new secret tokens that must be processed and stored by GitLab.
If GitLab fails to store the token or misses the new token request, an `Invalid JWT` error occurs.
To resolve this issue on GitLab self-managed, follow one of the solutions below, depending on your app installation method.
- If you installed the app from the official marketplace listing:
1. Open the GitLab for Jira Cloud app on Jira.
1. Select **Change GitLab version**.
1. Select **GitLab.com (SaaS)**.
1. Select **Change GitLab version** again.
1. Select **GitLab (self-managed)**.
1. Enter your **GitLab instance URL**.
1. Select **Save**.
- If you [installed the GitLab for Jira Cloud app manually](#install-the-gitlab-for-jira-cloud-app-manually):
- In GitLab 14.9 and later:
- Contact the [Jira Software Cloud support](https://support.atlassian.com/jira-software-cloud/) and ask to trigger a new installed lifecycle event for the GitLab for Jira Cloud app in your namespace.
- In all GitLab versions:
- Re-install the GitLab for Jira Cloud app. This might remove all already synced development panel data.