How to change data type from Numeric to Alphanumeric

Hi Experts,

I am working on a ticket and the requirement from client is they want data type to be Alphanumeric which is currently Numeric (Snapshot is attached for you reference.

Presently XSDAttribute Muster is \d* & ABAP-Attribute Techn Type is NUMC(10).

I want to know what is the meaning \d* why it is used?

I want to know how to change the data type to Alphanumeric from Numeric

Is \d* used for decimal ? if it is yes then what if we remove it then will it work as alphanumeric because in my configuration data type is string.

Please provide your valuable comments on my post and help me out to resolve this.

Thanks & Regards,

Mohit Dua