No matching provisioning profiles found (None of the valid provisioning profiles allowed the specified entitlements)
I am getting an error when archiving:
Code Sign error: No matching provisioning profiles found: None of the valid provisioning profiles allowed the specified entitlements: com.apple.developer.in-app-payments.
I added apple pay capability since the last time I archived successfully, so it's probably to do with that. How do I add the entitlements to the provisioning profile? The whole certificates/provisioning profiles/app id concept is so confusing, wondering if there are any good reads (for dummies) on exactly what/why/how these work.
You need to go to developer.apple.com and log in as your developer account. Go to the Certificates, Identifiers, and Profiles section, and find the app ID for your app. Click on it to expend the capabilities for the app ID. Make sure In App Purchases is enabled for both development and distribution (more info here).
Once you've made sure it is there, you'll want to re-generate the provisioning profile for the app ID, and then re-download the profile to your Mac. I tend to remove all my old provisioning profiles when I do this, since having multiple profiles for the same application ID can sometimes confuse Xcode. Provisioning profiles on your Mac are stored in /Library/MobileDevice/Provisioning Profiles/
After doing this, it isn't necessary, but I usually recommend devs to quit and relaunch Xcode.
As for resources, I think Apple's session, What's New in Code Signing, from WWDC 2016 was a great one for understanding the components that are required for code signing to work.