August 24, 2018 | qiutianbiao 1, apply for ios developer certificate error (as shown below) Because Apple officially requires up to 2 iOS development certificates, if the account already has 2 development certificates, the application will be reported. A development certificate can be used for multiple APP tests. Each application does not need to apply for a development certificate p12. The development certificate p12 can be used publicly. Different APPs can share one, and the description file applied in the following steps can be distinguished. A p12 can correspond to a myriad of description files, and the description file is unique to each APP. Of course, you can also delete the previous re-application without affecting the APP that has been put on the shelf. 2, apply for ios distribution certificate error (as shown below) Apple officially stipulates that iOS can issue up to three certificates, and if the account already has three certificates issued, the application will be reported. A publishing certificate can be used for multiple APPs. It is not only that only 3 applications can be applied for 3 certificates. The certificate p12 can be shared. Different APPs can share a p12. The description file will do. A p12 can correspond to a myriad of description files, each of which is independent and unique. You can also delete the previous release certificate and recreate it without affecting the app that has been posted. 3, apply for ios certificate error (as shown below) This error is usually a duplicate of the name, the same as the name applied for before. Don’t use Chinese characters for this name, and don’t use special characters. Simple alphanumeric characters will do.