What will you do when you find that an existing add$-$on from an ndependent Software Vendor $($ISV$)$ is not supported in SAP S$/$AHANA$?$ point

Ignore the add$-$on$.$ It will definitely not impact the implementation.

Request the customer to fix the issue after the implementation of SAP S$/4$HANA.

Convince the customer to remove the functionality from the business requirements documentation.

Propose a solution to get a compatible version of the add$-$on or information to uninstall the add$-$on from the vendor.