# Cannot submit app due to file upload failure **URL:** \ **Category:** App Submission\ **Created:** [April 2, 2025, 8:52am UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825 "2025-04-02T08:52:37Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Magnus1](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/magnus1/32/49307_2.png) [@Magnus1](https://devforum.zoom.us/u/Magnus1)\ **Post date:** [April 2, 2025, 8:52am UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825/1 "2025-04-02T08:52:37Z")
**Description** I’m trying to submit an app, but I’m prompted to upload a file to the technical design in point 5. “Additional Documents”. It says that it’s only recommended, and not required, but now, all of a sudden, I’m prompted to do it. The issue is that I cannot upload a file. When I uploads a file, it keeps loading forever. In the console logs, it shows this error: POST [https://marketplace.zoom.us/api/v1/files/upload](https://marketplace.zoom.us/api/v1/files/upload) 400 (Bad Request) I’m trying to upload a normal pdf file. I have not had any issues uploading files in other places earlier, such as for the Technical Architecture Diagram. **How To Reproduce** _1. Navigate to “Technical Design” in app submission._ _2. Click “Upload” in section 5. called “Additional Documents (Recommended)”._ _3. Select a file to upload._ _4. It now keeps loading in the UI and shows the error in the console logs._ ---
**Author:** ![virginie.zoom](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/virginie.zoom/32/41296_2.png) [@virginie.zoom](https://devforum.zoom.us/u/virginie.zoom)\ **Post date:** [April 2, 2025, 9:14pm UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825/2 "2025-04-02T21:14:34Z")
Hi Magnus, Can you please share screenshots of the submission with me in a DM? I am able to upload a file in that section on my end, whether it is a PDF or any other format it accepts. Best, Virginie ---
**Author:** ![Magnus1](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/magnus1/32/49307_2.png) [@Magnus1](https://devforum.zoom.us/u/Magnus1)\ **Post date:** [April 3, 2025, 7:11am UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825/3 "2025-04-03T07:11:17Z")
Hi Virgine, I can’t seem to send you a DM, so I’ll send it here. The first image is how it looks in the UI when I try to upload it. It just keeps spinning. The second image is what it shows in the console logs when I upload it. Image 1: `https://slack-files.com/T04AGPAM7HP-F08M7FW98DN-3fe6890416` Image 2: `https://slack-files.com/T04AGPAM7HP-F08LHCFHWFP-e5846d613a` I’ve tried with different PDFs and other file types to see if it should be something with the file, but none of them work. Best, Magnus ---
**Author:** ![pj.murray.nz](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/pj.murray.nz/32/67599_2.png) [@pj.murray.nz](https://devforum.zoom.us/u/pj.murray.nz)\ **Post date:** [May 9, 2025, 7:10pm UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825/4 "2025-05-09T19:10:22Z")
Hi Virginie, I have been having this issue as well for our app submission. Any update on whats going on here? ---
**Author:** ![yoon.conner](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/yoon.conner/32/46463_2.png) [@yoon.conner](https://devforum.zoom.us/u/yoon.conner)\ **Post date:** [May 9, 2025, 10:45pm UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825/5 "2025-05-09T22:45:12Z")
@pj.murray.nz Hi PJ, Thank you for raising this issue here! I’ve followed up directly with you on the Email thread. Please feel free to continue engaging there. Best, ---
**Author:** ![yoon.conner](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/yoon.conner/32/46463_2.png) [@yoon.conner](https://devforum.zoom.us/u/yoon.conner)\ **Post date:** [May 9, 2025, 10:45pm UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825/6 "2025-05-09T22:45:44Z")
Hi @Magnus1 Following up here to see if you were able to get this issue resolved. Best, ---
**Author:** ![Guilherme4](https://sea2.discourse-cdn.com/flex016/user_avatar/devforum.zoom.us/guilherme4/32/76534_2.png) [@Guilherme4](https://devforum.zoom.us/u/Guilherme4)\ **Post date:** [September 8, 2026, 10:28pm UTC](https://devforum.zoom.us/t/cannot-submit-app-due-to-file-upload-failure/130825/8 "2026-09-08T22:28:48Z")
Still happening as of September 2026, on a different field than the original report: the “Architecture Diagram” upload specifically (Technical Design → Overview tab), not just “Additional Documents.” Same endpoint (POST /api/v1/files/upload → 400), same pattern — the UI shows an optimistic success (filename + delete icon, checklist count increments) but it never actually persists server-side. Confirmed definitively with a hard reload (location.reload(true), bypassing cache/SPA state) rather than trusting the UI: the file is gone and the Overview checklist reverts every time. Tested both PDF and PNG formats, identical failure on both — not file-format specific. Cover Image upload (a different field, same page flow) works and persists fine, so it’s isolated to this one field/endpoint, not uploads in general. App name: TWX CRM. Would appreciate a fix or a workaround — this is currently blocking submission entirely since Architecture Diagram is a required field.