Hi,
We have configured SAP S/4HANA with Core Archive( via CMIS) Using SAP Document Management Integrate Option as per SAP Certification Scenario S4 BTP CMIS(Version 0.8) test plan (https://launchpad.support.sap.com/#/notes/3011960).
As per ICC test plan, we should test delete operation on single attachment and multiple attachments. Able to delete single attachment (attached screen shot)
How to delete multiple attachments from Attachments UI?

Thanks & Regards,
Yamini