When uninstall the compliance operator using the web console, there will be shown a checkbox "Deleting all operand instances for this operator".

However, this checkbox is not explained in the documentation.

https://docs.openshift.com/container-platform/4.15/security/compliance_operator/co-management/compliance-operator-uninstallation.html#compliance-operator-uninstall_compliance-operator-uninstallation

    4.15

    Always

    1. Uninstall the compliance operator using the web console
    2.
    3.
    

When testing in the 4.15.0-rc.5 environment, the deleting operands progress shows many errors as many operands are not found. 

It seems it's not a real issue and can be safely ignored, but it would be better to add a note in the documentation too to let the customer understand that they can ignore this kind of errors when uninstalling the compliance operator. 

See the following google doc for more details.
https://docs.google.com/document/d/13JQq5-g7rMwh7wOPS2M0ryCAQnUtOsTvzn75HACIVMs/edit?usp=sharing