The Apple Music API best practices mentions this:
Did you know that the same albums and songs in different regions will have different IDs? For example the ID for Drake’s If You’re Reading This Its Too Late in the US is 966997496. In the UK the ID is 966984970. Make sure you check the user’s storefront in order to provide the right content ID for playback. See the Search API or EPF for more information on getting content metadata including region specific IDs.
(source: https://affiliate.itunes.apple.com/resources/documentation/apple-music-best-practices-for-app-developers/)
I cannot find them in any of the EPFs though. Is there any way to get a Apple Music compatible (i.e. storefront specific) track ids without using iTunes Search API? My application is unusable because of the brutal rate limit introduction in November. I tried the lookup api, too but if I give it `s` parameter it expects me to give it regional iTunes ID.