Developer apple accounts may be associated with multiple teams or providers. If an account has multiple providers, the provider must be specified when uploading for notarization or else an error will be returned.

To show all the providers linked to the account, use the command below:

xcrun altool --list-providers -u "AC_USERNAME" -p "AC_PASSWORD"

Output:


From there, take one of the ProviderShortnames and use it for the option --asc-provider when notarizing the app as shown below:

xcrun altool --notarize-app --primary-bundle-id "com.myCompany.myApp" --username "AC_USERNAME" --password "AC_PASSWORD" --asc-provider "ProviderShortname" --file myApp.app

Otherwise, if there is only 1 provider listed, the --asc-provider line can be omitted entirely.