Hi - We are looking to add a Role to a 2GEN Unlocked package. To add this Role, we also need to add its hierarchy as each role references a parent up to the top 'Admin' role which does not.

When creating a new package version we are getting errors such as:

field integrity exception: unknown (Case access level below organization default) field integrity exception: unknown (Opportunity access level below organization default)  

The roles have either view or edit access: 

Opportunity Access | Users in this role can view all opportunities associated with accounts that they own, regardless of who owns the opportunities Case Access | Users in this role can view all cases associated with accounts that they own, regardless of who owns the cases

I  tried using unpackagedMetadata in the sfdx-project.json file and added Account, Case, Opportunity objects. We don't want those objects within the package. But am still getting those same errors.

Is this the right approach? How can I overcome the errors?

Thanks.