No fields were selected for the dynamic selections

What causes this issue?

In Customizing, you have not chosen any fields for dynamic selections.
Up to 70 fields can be used for dynamic selections. Since ECS items and
their documents can contain more than 70 fields, in Customizing you have
to define which fields the system is to use for dynamic selections.

System Response

The system cannot use dynamic selections because the Customizing is
missing.

How to fix this error?

In Customizing, choose the fields that you want to use for the dynamic
selections. You do this in IMG activity <DS:SIMG.GLEV_ECS_FIELD>Assign
Fields for Dynamic Selection</>.

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.