OAS on Marketplace: Create Domain Error On Create Schema

Summary:

My OAS stack cannot pass one of validation, due to

[VALIDATION] [ERROR]:PreReq Check for create new schema failed.

Content:

The following suggestion lets me check if DB is compatible.

[VALIDATION] [SUGGESTION]:Ensure the Database being used is compatible.
configuration Failed. Exiting configuration due to data validation failure.

I can confirm I am using DBVM of 19c. Specifically, it is 19.12.

I double check that the using DB user in stack configs has enough right granted to create schema.

I double check that I am connecting to the pluggable db fo the DBVM

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