EPP状态码是否区分大小写？是否仅用于注册人信息？

我查阅了相关RFC文档，未找到关于EPP状态码大小写敏感性的说明，因此提出以下疑问：

我遇到了几种不同格式的EPP状态码，不确定其有效性，也不清楚这些代码是会被自动化流程识别，还是仅用于展示给注册人查看。现明确两个核心问题：

• EPP状态码是否区分大小写？
• EPP状态码是否仅用于向注册人展示信息？

示例1 - 带链接格式

Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Domain Status: clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Domain Status: clientRenewProhibited https://icann.org/epp#clientRenewProhibited
Domain Status: clientDeleteProhibited https://icann.org/epp#clientDeleteProhibited

示例2 - 全小写格式

Domain Status: clienttransferprohibited
Domain Status: clientupdateprohibited
Domain Status: clientrenewprohibited
Domain Status: clientdeleteprohibited

示例3 - 标准格式

Domain Status: clientTransferProhibited
Domain Status: clientUpdateProhibited
Domain Status: clientRenewProhibited
Domain Status: clientDeleteProhibited

内容的提问来源于stack exchange，提问作者Ceylan B.