Are EPP status codes case-sensitive?

When I reviewed the relevant RFC documents, I couldn't find anything about the case sensitivity of the status codes. Therefore, I wanted to ask this question here.

I have encountered the following EPP codes, but I don't know whether they are valid. Additionally, I don't know whether these codes are considered by an automation process or if they are just for the registrant information.

Let me simplify my question; Are EPP status codes case-sensitive, and are they just for the registrant's information?

Example 1 - with a link

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

Example 2 - lower cases

Domain Status: clienttransferprohibitedDomain Status: clientupdateprohibitedDomain Status: clientrenewprohibitedDomain Status: clientdeleteprohibited

Example 3 - normal

Domain Status: clientTransferProhibitedDomain Status: clientUpdateProhibitedDomain Status: clientRenewProhibitedDomain Status: clientDeleteProhibited