Can I submit an exception request for my App before it's finished?

[FocuxPlus]

Hi there!

I'm new to developing a Shopify page builder app, My first app needed to inject liquid files into the Sections folder,  so I referred to the following example but got a 404 error (I requested write_themes).  I read the docs https://shopify.dev/docs/apps/online-store/other-integration-methods/asset said that I might be eligible for an exemption, and submit an exception request here, currently, my app is not finished, can I submit an exception request now order to be able to test inject feature? Or I can only submit the request after the App is finished?

Thanks!

Error: Received an error response (404 Not Found) from Shopify:
"Not Found"
If you report this error, please include this id: 5ead1fd1-916d-4ec4-a178-07744766b64a

const asset = new shopify.rest.Asset({session: session});
asset.theme_id = 828155753;
asset.key = "assets/bg-body.gif";
asset.src="http://example.com/new_bg.gif";
await asset.save({
update: true,
});

[SBD_]

Hey @FocuxPlus 

It should be fine to submit a request now since you'll need access to complete the app 🙂

[FocuxPlus]

Thanks for your kind reply! I tried, but I need to complete the app submission form and wait for the review, after getting approval, then I can get the Shopify App Store URL, but I am confused that I haven't completed this app yet. So, can I still submit it at this stage?

Thanks in advance!

[FocuxPlus]

Also, I read the docs for injecting the liquid into the theme, it mentioned:  

---

As an alternative, you can use theme app extensions, or instruct merchants how to add code to their theme using the following tools

---

Does it mean that I can create a theme app extension in my app to inject the liquid files without submit an exception request?

[SBD_]

Yep! The difference here is you'll need to give merchants instructions on how to add the block to their theme.