I'm looking at the Apple official document below and getting the app's information. https://developer.apple.com/documentation/devicemanagement/getting-app-and-book-information-legacy
However, I couldn't get the custom app's information for a few days ago. The result item is empty.
This is a URL that is normally viewed. https://uclient-api.itunes.apple.com/WebObjects/MZStorePlatform.woa/wa/lookup?version=2&p=mdm-lockup&caller=MDM&platform=volumestore&cc=jp&id=1202716089
This is the URL that gives an empty response to the result. https://uclient-api.itunes.apple.com/WebObjects/MZStorePlatform.woa/wa/lookup?version=2&p=mdm-lockup&caller=MDM&platform=volumestore&cc=jp&id=1556411142
In ABM/ASM, the number of applications used and the number of available applications are all viewed normally.
Is there anything else I can check? Please reply. Thank you.