"Certificates, Identifiers & Profiles" have two "Developer ID Installer" certificates, two "Development" certificates and two "Mac Installer Distribution" certificates.
Is it a problem ?
How to delete duplicated certificates ? How to fix it ?
Can I submit an Mac application to Apple Store with old OS:
Big Sure ?
Ventura ?
Multiple code-signing certificates are not a problem in general, you do have to be careful with Developer ID. See The Care and Feeding of Developer ID for more on this.
Another non-obvious here is the presence of managed certificates. For example, I have two separate Apple Distribution certificates, one whose type is “Distribution” and another whose type is “Distribution Managed”. This definitely isn’t a problem. The latter is used by Cloud Signing.
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Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"