Hi Kirat,
It seems to be a BUG in Mendix Builder v1.0.120.
( Because his trying to create a App in AppCenter.ms with dots in the name. AppCenter seems to be changed the rule in their side with broke Mx Mobile Builder…)
Mean while do it manually
Or
Best regards
Like Alexandre mentioned, this was indeed a bug in the Native Builder. Yesterday, the Native Builder 1.0.121 was released, resolving the issue. When opening the Native Builder, it will update automatically (though you likely won’t directly get the message), though you will need to restart (the Native Builder) again to use version 1.0.121.
If you tried to build and it failed in AppCenter with the message Creating app xyz-ios or xyz-android failed
it is required to delete the configuration (basically, we need to define new app identifiers due to the rule change that Alexandre mentioned). Easiest would be to remove the whole configuration by deleting the nativemobile folder from your project folder.