The following applies for the supported solution, credit card processing module via Nuvei (formerly PAYA):

The sales order does not automatically go on credit hold due to a credit card decline. This allows for a new method of payment or a replacement card to be used. The order can manually be placed on hold.

However, this is a good enhancement request and you may post or vote on this from the Sage X3, ideas site.

communityhub.sage.com/.../the-new-sage-x3-ideas-portal-is-live-on-aha

For third party, card processing solutions, review the request with your Sage business partner or third party developer.