create database system standalone free failed

Summary:

I've tried twice to create a standard always-free database system, and both times it ends in a "failed" state with no error message displayed. I have the resources available in my tier, from what I can tell. What is wrong, and is there a resource creation log for more details?

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

N/A

Code Snippet (add any code snippets that support your topic, if applicable):