The worklist is deprecated (use S/4HANA Code Inspector checks instead)

What causes this issue?

You use Custom Code Migration Worklist (transaction SYCM) to analyze the
needed adaptations in your custom code for SAP S/4HANA.
SAP now provides Code Inspector checks to analyze whether custom code
has to be adapted for SAP S/4HANA. SAP recommends to use the Code
Inspector checks instead of the Custom Code Migration Worklist. The
Custom Code Migration Worklist is deprecated.

System Response

Custom Code Migration Worklist shows a warning when the worklist is
displayed.

How to fix this error?

To perform an analysis for your custom code process the following steps:
Define a variant in Code Inspector (transaction SCI) that contains all
checks of check category "S/4HANA readiness".
Start an inspection for your coding by using ABAP Test Cockpit (ATC) or
Code Inspector.
The analysis can also be performed remotely by using the Code Inspector
object collector "Remote Objects (RFC)" as object set.

Procedure for System Administrators

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.