Explained in seven steps
Having extracted the QR code from a Released test profile, you can scan it with your device and so trigger the start of the download. Alternatively, you can also check-out the activation code of the profile and enter it into your device.
After a successful download, you should see that the profile changed its state into Downloaded. Depending on the device, the device may automatically move on to install the profile on the device. In this case, or after having triggered this manually on the device, the profile state will be Installed.
If something went wrong, the profile will be in the Error state:
You will also see this on the Profile management list of all profiles.
Don't be confused that you may see in the Activity Log of the profile that all transactions related to this profile have been conducted successfully. This might be the case from a SM-DP+ perspective, but there might still be a problem e.g. with installing the profile on the device.
To understand the problem, click on the Success button of the last transaction in the Activity Log. This will provide you with the next level of detail about the transaction which left the profile in the Error state:
From this you may already understand what caused the problem. There is an Error Code stated. Please see this error messages
If this still does not tell you what caused the problem, you can drill into the details of the transaction. Click on the Copy button. This copies all transaction details into the clipboard of your computer. From there you can paste it into an editor and analyze it: