How to install my Forge application into a Confluence sandbox
Asked by Meysam Naseri:

I have developed a forge application and no I am trying to install it into [Confluence Sandbox](https://support.atlassian.com/organization-administration/docs/manage-product-sandboxes/)

When I run 'Forge install' command and specify the site URL I get this error:

Error: The URL you entered doesn't belong to an Atlassian site

The URL I enter is <https://confluence-sandbox>.\<subdomain\>.\<companyname\>.com/

Why do I get that error and how can I fix it?

This app is a proof of concept and I have to install it on sandbox first to verify and test it.


Answers:
author: Meysam Naseri
body: Ok, so I can't install my app on Confluence DC version.

I stumble upon this page which talks about data center approved apps but doesn't go into much details and what I take from it only Marketplace vendors can develop apps for Confluence DC.

<https://www.atlassian.com/blog/add-ons/data-center-approved-apps>

So basically Confluence DC doesn't support developing apps. And **end users of Confluence Data Center don't have an option for customizing their Confluence installation and both Forge and Connect app models are not feasible**.

[@Alex Koxaras _Relational_](/t5/user/viewprofilepage/user-id/4150197) Thanks a lot for your help.


author: Alex Koxaras _Relational_
body: Hi [@Meysam Naseri](/t5/user/viewprofilepage/user-id/5056204) and welcome to the community,

Shouldn't the URL be <https://confluence-sandbox.atlassian.net> instead of [https://confluence-sandbox](https://confluence-sandbox/).\<subdomain\>.\<companyname\>.com ?

Sandboxes exists only on cloud. On server you can have another copy of your instance as a sandbox. And I think, if not mistaken, that Forge is only for Cloud.

comments: author: Meysam Naseri
body: No, it is a sandbox instance. So the URL is not in atlassian.net domain. I didn't find anywhere in Forge documentation that it says that Forge Applications has such a restriction.


author: Alex Koxaras _Relational_
body: [@Meysam Naseri](/t5/user/viewprofilepage/user-id/5056204) the link you provided about the sandbox, is a sandbox within the atlassian.net domain. Of course you can have your own sandbox, only if you are using a server or DC version. Are you?

Forge can be used only for cloud apps and not for server apps.


author: Meysam Naseri
body: We are using DC version


author: Meysam Naseri
body: [@Alex Koxaras _Relational_](/t5/user/viewprofilepage/user-id/4150197) I have read through Forge documentation and even there sections titled 'Limitations' but I didn't ran into any document that list such a restriction as to where I can install Forge and where I cannot. Is there any documentation about "Forge can be used only for cloud apps and not for server apps."? I actually need to find an article in which I can verify what can be done on what version. i.e. Can I use Connect app model on DC version?

The proof of concept app I have developed needs Forge Macro to embed an signed URL into page content which is a critical requirement for our solution.


author: Alex Koxaras _Relational_
body: [@Meysam Naseri](/t5/user/viewprofilepage/user-id/5056204) here you go [https://developer.atlassian.com/platform/forge/getting-started/#:\~:text=Welcome%20to%20developing%20with%20the%20Forge%20platform%20for%20Atlassian%E2%80%99s%20cloud%20products](https://developer.atlassian.com/platform/forge/getting-started/#:~:text=Welcome%20to%20developing%20with%20the%20Forge%20platform%20for%20Atlassian%E2%80%99s%20cloud%20products)

Connect is also for cloud products [https://developer.atlassian.com/platform/forge/getting-started/#:\~:text=Welcome%20to%20developing%20with%20the%20Forge%20platform%20for%20Atlassian%E2%80%99s%20cloud%20products](https://developer.atlassian.com/platform/forge/getting-started/#:~:text=Welcome%20to%20developing%20with%20the%20Forge%20platform%20for%20Atlassian%E2%80%99s%20cloud%20products)


author: Meysam Naseri
body: -


author: Alex Koxaras _Relational_
body: [@Meysam Naseri](/t5/user/viewprofilepage/user-id/5056204)

If my replies answered your questions kindly mark my answer as accepted as well. Thanx