An error occurs in Post processing. where is the cause?

[furuhashitcb]

The app was created with Flutter.
So, CodeMagic build environment is Flutter workflow editor.
I tried uploaded version is 1.0.0(pubspec.yaml).

The error message below is displayed.
Please tell me how to fix it.

App Store distribution

Find application entry from App Store Connect for uploaded binary
Found 1 App matching specified filters: bundleId=com.XXXX.XXXXX.
-- App --
Id: XXXXXXXXXXX
Type: apps
Bundle id: com.XXXX.XXXXX
Name: XXXXXXXXXXXXX
Primary locale: en-US
Sku: XXXXXXXXXX
Available in new territories: False
Is or ever was made for kids: False

Find freshly uploaded build
Did not find build matching uploaded version yet, it might be still processing. Waiting to try again...
Did not find build matching uploaded version yet, it might be still processing. Waiting to try again...
The application binary was successfully uploaded to App Store Connect for processing but the corresponding build is not available in App Store Connect. This usually happens when the uploaded application has one or more issues. Please check your email for direct feedback from Apple.

[himesh-cm]

@furuhashitcb As suggested in the logs, did you check your email from apple? What does it say?

[hzfplay]

@furuhashitcb How was the problem solved there? I also encountered this problem

[btanev]

I got the same error message recently - build is successful but App Store distribution fails with this message.
I've rerun the release build pipeline twice but didn't received any email from Apple. Have you encountered this scenario - is an issue in codemagic or apple?

The same pipeline was working as expected before the update to Xcode 26.

EDIT:
To anyone that finds this discussion with the same problem, here is a workaround:

• Download the release IPA from codemagic
• Deliver it to AppStore with the "Transporter" app

[dtrdic]

@btanev that’s not a good workaround. Apple rejected the app for a specific reason, which is mentioned in the failing log step. Do you mind creating a new discussion with a clear issue description so we can track it properly? Someone from our team will then take a look. Please also share the build ID related to the issue.

[btanev]

Hey there @dtrdic,

• I didn't get any messages from Apple on email or App Store Connect.
• Once I've uploaded the codemagic build with Transporter app it showed on AppStore Connect and I've submitted it for review - already published on the AppStore.

I assumed it was some kind of AppStore connect of codemagic issue - although that status pages showed no issues.

[dtrdic]

@btanev the post-processing error will tell you why the app was rejected. Can't tell the reason if you don't share any details