3568482 - Error "must match '^[a-z][0-9|a-z]{2,9}$'" when Creating an HTTP Response Header in Cloud Portal

Upon creating an HTTP Response Header in Cloud Portal with a code that starts with a digit (number), the following error will appear in the screen: 

The above error will prevent the customer from being able to save the changes and finish the HTTP Response Header creation.

SAP Commerce Cloud

must, match, response, header, http,number, hybris, ccv2  , KBA , CEC-SCC-CLA-CPO , Cloud Portal , Known Error